Guess the number/With feedback
You are encouraged to solve this task according to the task description, using any language you may know.
The task is to write a game that follows the following rules:
- The computer will choose a number between given set limits and asks the player for repeated guesses until the player guesses the target number correctly. At each guess, the computer responds with whether the guess was higher than, equal to, or less than the target - or signals that the input was inappropriate.
C.f: Guess the number/With Feedback (Player)
Ada
<lang Ada>with Ada.Numerics.Discrete_Random; with Ada.Text_IO; procedure Guess_Number_Feedback is
procedure Guess_Number (Lower_Limit : Integer; Upper_Limit : Integer) is
subtype Number is Integer range Lower_Limit .. Upper_Limit;
package Number_IO is new Ada.Text_IO.Integer_IO (Number);
package Number_RNG is new Ada.Numerics.Discrete_Random (Number);
Generator : Number_RNG.Generator;
My_Number : Number;
Your_Guess : Number;
begin
Number_RNG.Reset (Generator);
My_Number := Number_RNG.Random (Generator);
Ada.Text_IO.Put_Line ("Guess my number!");
loop
Ada.Text_IO.Put ("Your guess: ");
Number_IO.Get (Your_Guess);
exit when Your_Guess = My_Number;
if Your_Guess > My_Number then
Ada.Text_IO.Put_Line ("Wrong, too high!");
else
Ada.Text_IO.Put_Line ("Wrong, too low!");
end if;
end loop;
Ada.Text_IO.Put_Line ("Well guessed!");
end Guess_Number;
package Int_IO is new Ada.Text_IO.Integer_IO (Integer);
Lower_Limit : Integer;
Upper_Limit : Integer;
begin
loop
Ada.Text_IO.Put ("Lower Limit: ");
Int_IO.Get (Lower_Limit);
Ada.Text_IO.Put ("Upper Limit: ");
Int_IO.Get (Upper_Limit);
exit when Lower_Limit < Upper_Limit;
Ada.Text_IO.Put_Line ("Lower limit must be lower!");
end loop;
Guess_Number (Lower_Limit, Upper_Limit);
end Guess_Number_Feedback;</lang>
ALGOL 68
<lang algol68># simple guess-the-number game #
main:(
BOOL valid input := TRUE;
# register an error handler so we can detect and recover from #
# invalid input #
on value error( stand in
, ( REF FILE f )BOOL:
BEGIN
valid input := FALSE;
TRUE
END
);
# construct a random integer between 1 and 100 # INT number = 1 + ROUND ( random * 99 );
print( ( "I'm thinking of a number between 1 and 100", newline ) );
# read the user's guesses until they guess correctly #
# we give feedback so they can find the number using interval #
# halving #
WHILE
print( ( "What do you think it is? " ) );
INT guess;
WHILE
valid input := TRUE;
read( ( guess, newline ) );
NOT valid input
DO
print( ( "Please guess a number between 1 and 100", newline ) )
OD;
number /= guess
DO
IF number > guess
THEN
# the user's guess was too small #
print( ( newline, "My number is higher than that", newline ) )
ELSE
# the user's guess was too large #
print( ( newline, "My number is lower than that", newline ) )
FI
OD;
print( ( "That's correct!", newline ) )
)</lang>
- Output:
I'm thinking of a number between 1 and 100 What do you think it is? f Please guess a number between 1 and 100 q Please guess a number between 1 and 100 50 My number is higher than that What do you think it is? 75 My number is lower than that What do you think it is? 67 My number is higher than that What do you think it is? 72 My number is higher than that What do you think it is? 73 That's correct!
AppleScript
<lang AppleScript>-- defining the range of the number to be guessed property minLimit : 1 property maxLimit : 100
on run -- define the number to be guessed set numberToGuess to (random number from minLimit to maxLimit) -- prepare a variable to store the user's answer set guessedNumber to missing value -- prepare a variable for feedback set tip to "" -- start a loop (will be exited by using "exit repeat" after a correct guess) repeat -- ask the user for his/her guess, the variable tip contains text after first guess only set usersChoice to (text returned of (display dialog "Guess the number between " & minLimit & " and " & maxLimit & " inclusive" & return & tip default answer "" buttons {"Check"} default button "Check")) -- try to convert the given answer to an integer and compare it the number to be guessed try set guessedNumber to usersChoice as integer if guessedNumber is greater than maxLimit or guessedNumber is less than minLimit then -- the user guessed a number outside the given range set tip to "(Tipp: Enter a number between " & minLimit & " and " & maxLimit & ")" else if guessedNumber is less than numberToGuess then -- the user guessed a number less than the correct number set tip to "(Tipp: The number is greater than " & guessedNumber & ")" else if guessedNumber is greater than numberToGuess then -- the user guessed a number greater than the correct number set tip to "(Tipp: The number is less than " & guessedNumber & ")" else if guessedNumber is equal to numberToGuess then -- the user guessed the correct number and gets informed display dialog "Well guessed! The number was " & numberToGuess buttons {"OK"} default button "OK" -- exit the loop (quits this application) exit repeat end if on error -- something went wrong, remind the user to enter a numeric value set tip to "(Tipp: Enter a number between " & minLimit & " and " & maxLimit & ")" end try end repeat end run</lang>
AutoHotkey
<lang AutoHotkey>MinNum = 1 MaxNum = 99999999999
Random, RandNum, %MinNum%, %MaxNum% Loop {
InputBox, Guess, Number Guessing, Please enter a number between %MinNum% and %MaxNum%:,, 350, 130,,,,, %Guess%
If ErrorLevel
ExitApp
If Guess Is Not Integer
{
MsgBox, 16, Error, Invalid guess.
Continue
}
If Guess Not Between %MinNum% And %MaxNum%
{
MsgBox, 16, Error, Guess must be a number between %MinNum% and %MaxNum%.
Continue
}
If A_Index = 1
TotalTime = %A_TickCount%
Tries = %A_Index%
If Guess = %RandNum%
Break
If Guess < %RandNum%
MsgBox, 64, Incorrect, The number guessed (%Guess%) was too low.
If Guess > %RandNum%
MsgBox, 64, Incorrect, The number guessed (%Guess%) was too high.
} TotalTime := Round((A_TickCount - TotalTime) / 1000,1) MsgBox, 64, Correct, The number %RandNum% was guessed in %Tries% tries, which took %TotalTime% seconds.</lang>
AWK
<lang AWK>
- syntax: GAWK -f GUESS_THE_NUMBER_WITH_FEEDBACK.AWK
BEGIN {
L = 1
H = 100
srand()
n = int(rand() * (H-L+1)) + 1
printf("I am thinking of a number between %d and %d. Try to guess it.\n",L,H)
while (1) {
getline ans
if (ans !~ /^[0-9]+$/) {
print("Your input was not a number. Try again.")
continue
}
if (n == ans) {
print("Well done you.")
break
}
if (n > ans) {
print("Incorrect, your answer was too low. Try again.")
continue
}
if (n < ans) {
print("Incorrect, your answer was too high. Try again.")
continue
}
}
exit(0)
} </lang>
BASIC
Applesoft BASIC
<lang ApplesoftBasic>100 L% = 1 110 U% = 10 120 N% = RND(1) * (U% - L% + 1) + L% 130 PRINT "A NUMBER FROM " L%; 140 PRINT " TO " U%; 150 PRINT ", CALLED A TARGET, HAS BEEN RANDOMLY CHOSEN." 160 FOR Q = 0 TO 1 STEP 0 170 INPUT "GUESS THE TARGET NUMBER: "; G% 180 IF G% < L% OR G% > U% THEN PRINT "THE INPUT WAS INAPPROPRIATE." 190 IF G% > N% THEN PRINT "THE GUESS WAS HIGHER THAN THE TARGET." 200 IF G% < N% THEN PRINT "THE GUESS WAS LESS THAN THE TARGET." 210 Q = G% = N% 220 NEXT 230 PRINT "THE GUESS WAS EQUAL TO THE TARGET."</lang>
BASIC256
<lang basic256> Min = 5: Max = 15 chosen = int(rand*(Max-Min+1)) + Min print "Guess a whole number between "+Min+" and "+Max do
input "Enter your number " ,guess if guess < Min OR guess > Max then
print "That was an invalid number" end
else
if guess < chosen then print "Sorry, your number was too low"
if guess > chosen then print "Sorry, your number was too high"
if guess = chosen then print "Well guessed!"
end if
until guess = chosen </lang> Output:(example)
Guess a whole number between 5 and 15 Enter your number 10 Sorry, your number was too high Enter your number 7 Sorry, your number was too low Enter your number 8 Well guessed!
Batch File
<lang dos>@echo off
- A
set /a number=%random% %% 10 + 1
- B
set /p guess=Choose a number between 1 and 10: if %guess equ %number% goto win if %guess% gtr 10 msg * "Number must be between 1 and 10." if %guess% leq 0 msg * "Number must be between 1 and 10." if %guess% gtr %number% echo Higher! if %guess% lss %number% echo Lower! goto B
- win
cls echo You won! The number was %number% pause>nul goto A</lang>
BBC BASIC
<lang bbcbasic> Min% = 1
Max% = 10
chosen% = RND(Max%-Min%+1) + Min% - 1
REPEAT
PRINT "Guess a number between "; Min% " and " ;Max% ;
INPUT ": " guess%
CASE TRUE OF
WHEN guess% < Min% OR guess% > Max%:
PRINT "That was an invalid number"
WHEN guess% < chosen%:
PRINT "Sorry, your number was too low"
WHEN guess% > chosen%:
PRINT "Sorry, your number was too high"
OTHERWISE:
PRINT "Well guessed!"
EXIT REPEAT
ENDCASE
UNTIL FALSE
END</lang>
Brat
<lang brat>number = random 10
p "Guess a number between 1 and 10."
until {
guess = ask("Guess: ").to_i
true? (guess.null? || { guess > 10 || guess < 1 })
{ p "Please guess a number between 1 and 10."}
{ true? guess == number
{ p "Correct!"; true }
{ true? guess < number
{ p "Too low!" }
{ p "Too high!" }
}
}
}</lang>
C
<lang c>#include <stdlib.h>
- include <stdio.h>
- include <time.h>
- define lower_limit 0
- define upper_limit 100
int main(){
int number, guess;
srand( time( 0 ) ); number = lower_limit + rand() % (upper_limit - lower_limit + 1);
printf( "Guess the number between %d and %d: ", lower_limit, upper_limit );
while( scanf( "%d", &guess ) == 1 ){
if( number == guess ){
printf( "You guessed correctly!\n" );
break;
}
printf( "Your guess was too %s.\nTry again: ", number < guess ? "high" : "low" );
}
return 0;
}</lang>
Demonstration:
Guess the number between 0 and 100: 50 Your guess was too low. Try again: 75 Your guess was too high. Try again: 63 Your guess was too high. Try again: 57 Your guess was too low. Try again: 60 Your guess was too high. Try again: 58 Your guess was too low. Try again: 59 You guessed correctly!
C++
<lang cpp>#include <iostream>
- include <cstdlib>
- include <ctime>
int main() {
std::srand(std::time(0)); int lower, upper, guess; std::cout << "Enter lower limit: "; std::cin >> lower; std::cout << "Enter upper limit: "; std::cin >> upper; int random_number = lower + std::rand() % ((upper + 1) - lower);
do
{
std::cout << "Guess what number I have: ";
std::cin >> guess;
if (guess > random_number)
std::cout << "Your guess is too high\n";
else if (guess < random_number)
std::cout << "Your guess is too low\n";
else
std::cout << "You got it!\n";
} while (guess != random_number);
return 0;
}</lang> Output:
Enter lower limit: 1 Enter upper limit: 100 Guess what number I have: 50 Your guess is too high Guess what number I have: 40 Your guess is too high Guess what number I have: 25 Your guess is too high Guess what number I have: 10 Your guess is too high Guess what number I have: 2 Your guess is too low Guess what number I have: 4 Your guess is too high Guess what number I have: 3 You got it!
C#
<lang csharp>using System;
class Program {
static void Main(string[] args)
{
const int from = 1;
const int to = 10;
int randomNumber = new Random().Next(from, to);
int guessedNumber;
Console.Write("The number is between {0} and {1}. ", from, to);
while (true)
{
Console.Write("Make a guess: ");
if (int.TryParse(Console.ReadLine(), out guessedNumber))
{
if (guessedNumber == randomNumber)
{
Console.WriteLine("You guessed the right number!");
break;
}
else
{
Console.WriteLine("Your guess was too {0}.", (guessedNumber > randomNumber) ? "high" : "low");
}
}
else
{
Console.WriteLine("Input was not an integer.");
}
}
Console.WriteLine();
Console.WriteLine("Press any key to exit.");
Console.ReadKey();
}
} </lang> Output:
The number is between 1 and 10. Make a guess: 1 Your guess was too low. Make a guess: 9 Your guess was too high. Make a guess: 5 Your guess was too low. Make a guess: 6 Your guess was too low. Make a guess: hello, world Input was not an integer. Make a guess: 7 You guessed the right number! Press any key to exit.
Clojure
<lang clojure>(defn guess-run []
(let [start 1
end 100 target (+ start (rand-int (inc (- end start))))]
(printf "Guess a number between %d and %d" start end)
(loop [i 1]
(printf "Your guess %d:\n" i)
(let [ans (read)]
(if (cond (not (number? ans)) (println "Invalid format") (or (< ans start) (> ans end)) (println "Out of range") (< ans target) (println "too low") (> ans target) (println "too high") :else true) (println "Correct") (recur (inc i)))))))</lang>
COBOL
<lang cobol> IDENTIFICATION DIVISION.
PROGRAM-ID. Guess-With-Feedback.
DATA DIVISION.
LOCAL-STORAGE SECTION.
01 Seed PIC 9(8).
01 Random-Num PIC 99.
01 Guess PIC 99.
PROCEDURE DIVISION.
ACCEPT Seed FROM TIME
COMPUTE Random-Num =
FUNCTION REM(FUNCTION RANDOM(Seed) * 1000, 10) + 1
DISPLAY "Guess a number between 1 and 10:"
PERFORM FOREVER
ACCEPT Guess
IF Guess > Random-Num
DISPLAY "Your guess was too high."
ELSE IF Guess < Random-Num
DISPLAY "Your guess was too low."
ELSE
DISPLAY "Well guessed!"
EXIT PERFORM
END-PERFORM
GOBACK
.</lang>
Common Lisp
<lang lisp>(defun guess-the-number-feedback (&optional (min 1) (max 100))
(let ((num-guesses 0)
(num (+ (random (1+ (- max min))) min)) (guess nil))
(format t "Try to guess a number from ~:d to ~:d!~%" min max) (loop do (format t "Guess? ")
(incf num-guesses) (setf guess (read)) (format t "Your guess is ~[not a number.~;too small.~;too large.~;correct!~]~%" (cond ((not (numberp guess)) 0) ((< guess num) 1) ((> guess num) 2) ((= guess num) 3))) until (and (numberp guess) (= guess num)))
(format t "You got the number correct on the ~:r guess!~%" num-guesses)))
</lang> Output:
CL-USER> (guess-the-number-feedback 1 1024) Try to guess a number from 1 to 1,024! Guess? 512 Your guess is too small. Guess? 768 Your guess is too small. Guess? 896 Your guess is too large. Guess? 832 Your guess is too small. Guess? 864 Your guess is too large. Guess? 848 Your guess is too large. Guess? 840 Your guess is too large. Guess? 836 Your guess is correct! You got the number correct on the eighth guess!
D
<lang d>import std.stdio, std.random, std.typecons, std.conv, std.string,
std.range;
void main() {
immutable interval = tuple(1, 100);
writefln("Guess my target number that is between " ~
"%d and %d (inclusive).\n", interval[]);
immutable target = uniform!"[]"(interval[]);
foreach (immutable i; sequence!q{n}) {
writef("Your guess #%d: ", i + 1);
immutable txt = stdin.readln.strip;
Nullable!int answer;
try {
answer = txt.to!int;
} catch (ConvException e) {
writefln(" I don't understand your input '%s'", txt);
continue;
}
if (answer < interval[0] || answer > interval[1]) {
writeln(" Out of range!");
continue;
}
if (answer == target) {
writeln(" Well guessed.");
break;
}
writeln(answer < target ? " Too low." : " Too high.");
}
}</lang> Sample game:
Guess my target number that is between 1 and 100 (inclusive). Your guess #1: 100 Too high. Your guess #2: 5 Too low. Your guess #3: 522 Out of range! Your guess #4: 50 Too low. Your guess #5: 75 Too low. Your guess #6: 80 Too low. Your guess #7: 90 Too high. Your guess #8: 85 Too high. Your guess #9: 83 Well Guessed.
DCL
<lang DCL>$ rnd = f$extract( 21, 2, f$time() ) $ count = 0 $ loop: $ inquire guess "guess what number between 0 and 99 inclusive I am thinking of" $ guess = f$integer( guess ) $ if guess .lt. 0 .or. guess .gt. 99 $ then $ write sys$output "out of range" $ goto loop $ endif $ count = count + 1 $ if guess .lt. rnd then $ write sys$output "too small" $ if guess .gt. rnd then $ write sys$output "too large" $ if guess .ne. rnd then $ goto loop $ write sys$output "it only took you ", count, " guesses"</lang>
- Output:
$ @guess guess what number between 0 and 99 inclusive I am thinking of: 50 too small guess what number between 0 and 99 inclusive I am thinking of: 999 out of range guess what number between 0 and 99 inclusive I am thinking of: 75 too small guess what number between 0 and 99 inclusive I am thinking of: 82 too small guess what number between 0 and 99 inclusive I am thinking of: 91 too small guess what number between 0 and 99 inclusive I am thinking of: 96 too small guess what number between 0 and 99 inclusive I am thinking of: 98 too large guess what number between 0 and 99 inclusive I am thinking of: 97 it only took you 7 guesses
Delphi
<lang Delphi>program GuessTheNumber;
{$APPTYPE CONSOLE}
uses
SysUtils, Math;
const
// Set min/max limits min: Integer = 1; max: Integer = 10;
var
last, val, inp: Integer; s: string;
// Initialise new game
procedure NewGame;
begin
// Make sure this number isn't the same as the last one
repeat
val := RandomRange(min,max);
until
val <> last;
// Save this number
last := val;
Writeln('Guess a number between ', min, ' and ', max, ' [Answer = ', val, ']');
end;
begin
// Initialise the random number generator with a random value Randomize;
// Initialise last number last := 0; // Initialise user input s := ;
// Start game NewGame;
// Loop repeat // User input Readln(s);
// Validate - checxk if input is a number
if TryStrToInt(s,inp) then
begin
// Is it the right number?
if (inp = val) then
begin
// Yes - request a new game
Writeln('Correct! Another go? Y/N');
Readln(s);
if SameText(s,'Y') then
// Start new game
NewGame
else
Exit;
end
else
// Input too low/high
if (inp < val) then
Writeln('Too low! Try again...')
else
if (inp > val) then
Writeln('Too high! Try again...');
end
else
// Input invalid
if not SameText(s,'bored') then
Writeln('Invalid input! Try again...');
until
SameText(s,'bored');
end.
</lang>
EchoLisp
<lang lisp>
- (read <default-value> <prompt>) prompts the user with a default value using the browser dialog box.
- we play sounds to make this look like an arcade game
(lib 'web) ; (play-sound) is defined in web.lib
(define (guess-feed (msg " 🔮 Enter a number in [0...100], -1 to stop.") (n (random 100)) (user 0))
(set! user (read user msg))
(play-sound 'ko)
(unless (eq? n user ) ; user is the last user answer
(guess-feed
(cond ;; adapt prompt according to condition
((not (integer? user)) "❌ Please, enter an integer")
(( < user 0) (error "🌵 - It was:" n)) ; exit to top level
((> n user) "Too low ...")
((< n user) "Too high ..."))
n user))
(play-sound 'ok )
" 🔮 Well played!! 🍒 🍇 🍓")
</lang>
Ela
<lang ela>open string datetime random core monad io
guess () = do
putStrLn "What's the upper bound?"
ub <- readAny
main ub
where main ub
| ub < 0 = "Bound should be greater than 0."
| else = do
putStrLn $ format "Guess a number from 1 to {0}" ub
dt <- datetime.now
guesser (rnd (milliseconds $ dt) 1 ub)
guesser v = do
x <- readAny
if x == v then
cont ()
else if x < v then
do putStrLn "Too small!"
guesser v
else
do putStrLn "Too big!"
guesser v
cont () = do
putStrLn "Correct! Do you wish to continue (Y/N)?"
ask ()
ask () = do
a <- readStr
if a == "y" || a == "Y" then
guess ()
else if a == "n" || a == "N" then
do putStrLn "Bye!"
else
do putStrLn "Say what?"
ask ()
guess () ::: IO</lang>
Elixir
<lang elixir>defmodule GuessingGame do
def play(lower, upper) do
:random.seed(:os.timestamp)
play(lower, upper, :random.uniform(upper + 1 - lower) + lower - 1)
end
defp play(lower, upper, number) do
guess = Integer.parse(IO.gets "Guess a number (#{lower}-#{upper}): ")
case guess do
{^number, _} ->
IO.puts "Well guessed!"
{n, _} when n in lower..upper ->
IO.puts if n > number, do: "Too high.", else: "Too low."
play(lower, upper, number)
_ ->
IO.puts "Guess not in valid range."
play(lower, upper, number)
end
end
end
GuessingGame.play(1, 100)</lang>
Erlang
<lang erlang>% Implemented by Arjun Sunel -module(guess_number). -export([main/0]).
main() -> L = 1 , % Lower Limit U = 100, % Upper Limit
io:fwrite("Guess my number between ~p and ", [L]), io:fwrite("and ~p until you get it right.\n", [U]), N = random:uniform(100), guess(N).
guess(N) -> {ok, [K]} = io:fread("Guess the number : ","~d"), if K=:=N -> io:format("Well guessed!!\n"); true -> if K > N -> io:format("Your guess is too high.\n"); true -> io:format("Your guess is too low.\n") end, guess(N) end. </lang>
- Output:
1> c(guess_number).
{ok,guess_number}
2> guess_number:main().
Guess my number between 1 and and 100 until you get it right.
Guess the number : 50
Your guess is too low.
Guess the number : 70
Your guess is too low.
Guess the number : 85
Your guess is too high.
Guess the number : 75
Your guess is too high.
Guess the number : 73
Well guessed!!
ok
Euphoria
<lang euphoria>include get.e
constant lower_limit = 0, upper_limit = 100
integer number, guess number = rand(upper_limit-lower_limit+1)+lower_limit
printf(1,"Guess the number between %d and %d: ", lower_limit & upper_limit) while 1 do
guess = floor(prompt_number("", lower_limit & upper_limit))
if number = guess then
puts(1,"You guessed correctly!\n")
exit
elsif number < guess then
puts(1,"You guessed too high.\nTry again: ")
else
puts(1,"You guessed to low.\nTry again: ")
end if
end while</lang>
Factor
<lang factor>USING:
formatting fry io kernel math math.parser math.ranges prettyprint random ;
IN: guessnumber
- game-step ( target -- ? )
readln string>number
[
2dup =
[ 2drop f "Correct!" ]
[ < "high" "low" ? "Guess too %s, try again." sprintf t swap ]
if
]
[ drop t "Invalid guess." ]
if* print flush ;
- main ( -- )
99 [1,b] [ unparse "Number in range %s, your guess?\n" printf flush ] [ random '[ _ game-step ] loop ] bi ;</lang>
Fantom
<lang fantom> class Main {
public static Void main ()
{
Int lowerLimit := 1
Int higherLimit := 100
Int target := (lowerLimit..higherLimit).random
Int guess
while (guess != target)
{
echo ("Enter a guess: ")
try
{
// read in a line of input, and try to interpret as an Int
guess = Env.cur.in.readLine.trim.toInt
if (guess == target)
{
echo ("Well guessed!")
}
else if (guess < target)
{
echo ("Failed - your guess is too small")
}
else // if (guess > target)
{
echo ("Failed - your guess is too large")
}
}
catch (Err e)
{
echo ("Your guess must be an integer")
}
}
}
} </lang>
Sample game:
Enter a guess: 50 Failed - your guess is too small Enter a guess: 75 Failed - your guess is too large Enter a guess: 67 Failed - your guess is too large Enter a guess: 60 Failed - your guess is too large Enter a guess: 55 Failed - your guess is too large Enter a guess: 53 Failed - your guess is too small Enter a guess: 54 Well guessed!
Fortran
<lang fortran>program Guess_a_number
implicit none
integer, parameter :: limit = 100
integer :: guess, number
real :: rnum
write(*, "(a, i0, a)") "I have chosen a number between 1 and ", limit, &
" and you have to try to guess it."
write(*, "(a/)") "I will score your guess by indicating whether it is higher, lower or the same as that number"
call random_seed
call random_number(rnum)
number = rnum * limit + 1
do
write(*, "(a)", advance="no") "Enter quess: "
read*, guess
if(guess < number) then
write(*, "(a/)") "That is lower"
else if(guess > number) then
write(*, "(a/)") "That is higher"
else
write(*, "(a)") "That is correct"
exit
end if
end do
end program</lang> Output
I have chosen a number bewteen 1 and 100 and you have to try to guess it. I will score your guess by indicating whether it is higher, lower or the same as that number. Enter guess: 50 That is lower Enter guess: 75 That is higher Enter guess: 62 That is higher Enter guess: 57 That is correct
Go
<lang go>package main
import (
"fmt" "math/rand" "time"
)
const lower, upper = 1, 100
func main() {
fmt.Printf("Guess integer number from %d to %d: ", lower, upper)
rand.Seed(time.Now().Unix())
n := rand.Intn(upper-lower+1) + lower
for guess := n; ; {
switch _, err := fmt.Scan(&guess); {
case err != nil:
fmt.Println("\n", err, "So, bye.")
return
case guess < n:
fmt.Print("Too low. Try again: ")
case guess > n:
fmt.Print("Too high. Try again: ")
default:
fmt.Println("Well guessed!")
return
}
}
}</lang>
Groovy
Based on the Java implementation <lang groovy> def rand = new Random() // java.util.Random def range = 1..100 // Range (inclusive) def number = rand.nextInt(range.size()) + range.from // get a random number in the range
println "The number is in ${range.toString()}" // print the range
def guess while (guess != number) { // keep running until correct guess
try {
print 'Guess the number: '
guess = System.in.newReader().readLine() as int // read the guess in as int
switch (guess) { // check the guess against number
case { it < number }: println 'Your guess is too low'; break
case { it > number }: println 'Your guess is too high'; break
default: println 'Your guess is spot on!'; break
}
} catch (NumberFormatException ignored) { // catches all input that is not a number
println 'Please enter a number!'
}
} </lang> Example: <lang> The number is in 1..100 Guess the number: ghfvkghj Please enter a number! Guess the number: 50 Your guess is too low Guess the number: 75 Your guess is too low Guess the number: 83 Your guess is too low Guess the number: 90 Your guess is too low Guess the number: 95 Your guess is too high Guess the number: 92 Your guess is spot on! </lang>
Haskell
<lang haskell> import Control.Monad import System.Random
-- Repeat the action until the predicate is true. until_ act pred = act >>= pred >>= flip unless (until_ act pred)
answerIs ans guess =
case compare ans guess of LT -> putStrLn "Too high. Guess again." >> return False EQ -> putStrLn "You got it!" >> return True GT -> putStrLn "Too low. Guess again." >> return False
-- Repeatedly read until the input *starts* with a number. (Since -- we use "reads" we allow garbage to follow it, though.) ask = do line <- getLine
case reads line of
((num,_):_) -> return num
otherwise -> putStrLn "Please enter a number." >> ask
main = do
ans <- randomRIO (1,100) :: IO Int putStrLn "Try to guess my secret number between 1 and 100." ask `until_` answerIs ans
</lang>
Icon and Unicon
<lang Icon> procedure main()
smallest := 5
highest := 25
n := smallest-1 + ?(1+highest-smallest)
repeat {
writes("Pick a number from ", smallest, " through ", highest, ": ")
guess := read ()
if n = numeric(guess)
then {
write ("Well guessed!")
exit ()
}
else if n < numeric(guess)
then write ("Your guess is too high")
else if n > numeric(guess)
then write ("Your guess is too low")
else write ("Did you enter a number?")
}
end </lang>
Output:
$ ./guess-feedback Pick a number from 5 through 25: 10 Your guess is too low Pick a number from 5 through 25: 16 Your guess is too low Pick a number from 5 through 25: 20 Your guess is too low Pick a number from 5 through 25: 23 Your guess is too high Pick a number from 5 through 25: 22 Well guessed!
J
<lang j>require 'misc' game=: verb define
assert. y -: 1 >. <.{.y
n=: 1 + ?y
smoutput 'Guess my integer, which is bounded by 1 and ',":y
whilst. -. x -: n do.
x=. {. 0 ". prompt 'Guess: '
if. 0 -: x do. 'Giving up.' return. end.
smoutput (*x-n){::'You win.';'Too high.';'Too low.'
end.
)</lang>
Note: in computational contexts, J programmers typically avoid loops. However, in contexts which involve progressive input and output and where event handlers are too powerful (too complicated), loops are probably best practice.
Example use:
<lang> game 100 Guess my integer, which is bounded by 1 and 100 Guess: 64 Too high. Guess: 32 Too low. Guess: 48 Too high. Guess: 40 Too low. Guess: 44 You win.</lang>
Java
<lang Java>import java.util.Random; import java.util.Scanner; public class Main {
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
Random random = new Random();
long from = 1;
long to = 100;
int randomNumber = random.nextInt(to - from + 1) + from;
int guessedNumber = 0;
System.out.printf("The number is between %d and %d.\n", from, to);
do
{
System.out.print("Guess what the number is: ");
guessedNumber = scan.nextInt();
if (guessedNumber > randomNumber)
System.out.println("Your guess is too high!");
else if (guessedNumber < randomNumber)
System.out.println("Your guess is too low!");
else
System.out.println("You got it!");
} while (guessedNumber != randomNumber);
}
}</lang> Demonstration:
The number is between 1 and 100. Guess what the number is: 50 Your guess is too high! Guess what the number is: 25 Your guess is too high! Guess what the number is: 17 Your guess is too high! Guess what the number is: 10 Your guess is too high! Guess what the number is: 5 Your guess is too low! Guess what the number is: 7 You got it!
JavaScript
<lang html4strict>
Pick a number between 1 and 100.
<form id="guessNumber">
<input type="text" name="guess"> <input type="submit" value="Submit Guess">
</form>
<script type="text/javascript"></lang> <lang javascript>var number = Math.ceil(Math.random() * 100);
function verify() {
var guess = Number(this.elements.guess.value),
output = document.getElementById('output');
if (isNaN(guess)) {
output.innerHTML = 'Enter a number.';
} else if (number === guess) {
output.innerHTML = 'You guessed right!';
} else if (guess > 100) {
output.innerHTML = 'Your guess is out of the 1 to 100 range.';
} else if (guess > number) {
output.innerHTML = 'Your guess is too high.';
} else if (guess < number) {
output.innerHTML = 'Your guess is too low.';
}
return false;
}
document.getElementById('guessNumber').onsubmit = verify;</lang> <lang html4strict></script></lang>
Spidermonkey Version
<lang javascript>#!/usr/bin/env js
function main() {
guessTheNumber(1, 100);
}
function guessTheNumber(low, high) {
var num = randOnRange(low, high);
var guessCount = 0;
function checkGuess(n) {
if (n < low || n > high) {
print('That number is not between ' + low + ' and ' + high + '!');
return false;
}
if (n == num) {
print('You got it in ' + String(guessCount) + ' tries.');
return true;
}
if (n < num) {
print('Too low.');
} else {
print('Too high.');
}
return false;
}
print('I have picked a number between ' + low + ' and ' + high + '. Try to guess it!');
while (true) {
guessCount++;
putstr(" Your guess: ");
var n = parseInt(readline());
if (checkGuess(n)) break;
}
}
function randOnRange(low, high) {
var r = Math.random(); return Math.floor(r * (high - low + 1)) + low;
}
main(); </lang>
Example session:
I have picked a number between 1 and 100. Try to guess it! Your guess: 50 Too low. Your guess: 75 Too high. Your guess: 62 Too high. Your guess: 56 Too low. Your guess: 58 Too high. Your guess: 57 You got it in 6 tries.
Julia
<lang Julia>function guess_feedback(n)
number = rand(1:n)
print("I choose a number between 1 and $n\nYour guess? ")
while((guess = chomp(readline(STDIN))) != string(number))
isdigit(guess) ?
print("Too $(parse(Int,guess) < number ? "small" : "big")") :
print("Enter an integer please")
print("\nNew guess? ")
end
print("you guessed right!")
end</lang>
- Output:
julia> guess_feedback(10) I choose a number between 1 and 10 Your guess? 5 Too small New guess? 8 Too big New guess? no luck Enter an integer please New guess? 6 you guessed right!
Lasso
<lang Lasso>#!/usr/bin/lasso9
local( lower = integer_random(10, 1), higher = integer_random(100, 20), number = integer_random(#higher, #lower), status = false, guess )
// prompt for a number stdout('Guess a number: ')
while(not #status) => { #guess = null
// the following bits wait until the terminal gives you back a line of input while(not #guess or #guess -> size == 0) => { #guess = file_stdin -> readSomeBytes(1024, 1000) } #guess = integer(#guess)
if(not (range(#guess, #lower, #higher) == #guess)) => { stdout('Input not of correct type or range. Guess a number: ') else(#guess > #number) stdout('That was to high, try again! ') else(#guess < #number) stdout('That was to low, try again! ') else(#guess == #number) stdout('Well guessed!') #status = true } }</lang>
With range value 8 and 73. Correct number 13
Output:
Guess a number: 70 That was to high, try again! 35 That was to high, try again! 14 That was to high, try again! 7 Input not of correct type or range. Guess a number: 10 That was to low, try again! 12 That was to low, try again! 13 Well guessed!
LFE
<lang lisp> (defmodule guessing-game
(export (main 0)))
(defun get-player-guess ()
(let (((tuple 'ok (list guessed)) (: io fread '"Guess number: " '"~d"))) guessed))
(defun check-guess (answer guessed)
(cond
((== answer guessed)
(: io format '"Well-guessed!!~n"))
((/= answer guessed)
(if (> answer guessed) (: io format '"Your guess is too low.~n"))
(if (< answer guessed) (: io format '"Your guess is too high.~n"))
(check-guess answer (get-player-guess)))))
(defun main ()
(: io format '"Guess the number I have chosen, between 1 and 10.~n") (check-guess (: random uniform 10) (get-player-guess)))
</lang>
From the LFE REPL (assuming the above code was saved in the file "guessing-game.lfe"):
<lang lisp> > (slurp '"guessing-game.lfe")
- (ok guessing-game)
> (main) Guess the number I have chosen, between 1 and 10. Guess number: 10 Your guess is too high. Guess number: 1 Your guess is too low. Guess number: 5 Your guess is too low. Guess number: 7 Well-guessed!! ok > </lang>
Liberty BASIC
<lang lb> [start]
target = int( rnd( 1) * 100) +1
while 1
do
input "Guess a whole number between 1 and 100. To finish, type 'exit' "; b$
if b$ ="exit" then print "Thank you for playing!": end
c = val( b$)
ok =( c =int( c)) and ( c >=1) and ( c <=100)
if ok =0 then notice "Invalid data. Integers 1 to 100 only."
loop until ok <>0
if c =target then print " You guessed correctly.": print: goto [start] if c <target then print " Your guess was too low." if c >target then print " Your guess was too high."
wend </lang>
LiveCode
<lang LiveCode>command guessTheNumber lowN highN
local tNumber, tguess, tmin, tmax
if lowN is empty or lowN < 1 then
put 1 into tmin
else
put lowN into tmin
end if
if highN is empty then
put 10 into tmax
else
put highN into tmax
end if
put random(tmax - tmin + 1) + tmin - 1 into tNumber
repeat until tguess is tNumber
ask question "Please enter a number between" && tmin && "and" && tmax titled "Guess the number"
if it is not empty then
put it into tguess
if tguess is tNumber then
answer "Well guessed!"
else if tguess < tNumber then
answer "too low"
else
answer "too high"
end if
else
exit repeat
end if
end repeat
end guessTheNumber</lang> Test <lang LiveCode>command testGuessNumber
guessTheNumber --defaults to 1-10 guessTheNumber 9,12
end testGuessNumber</lang>
Locomotive Basic
<lang locobasic>10 CLS:RANDOMIZE TIME 20 PRINT "Please specify lower and upper limits":guess=0 30 INPUT " (must be positive integers) :", first, last 40 IF first<1 OR last<1 THEN 20 50 num=INT(RND*(last-first+1)+first) 60 WHILE num<>guess 70 INPUT "Your guess? ", guess 80 IF guess<num THEN PRINT "too small!" 90 IF guess>num THEN PRINT "too large!" 100 WEND 110 INPUT "That's correct! Another game (y/n)? ", yn$ 120 IF yn$="y" THEN 20 </lang>
Output:
Logo
<lang logo>to guess [:max 100]
local "number make "number random :max local "guesses make "guesses 0
local "guess
forever [
(type [Guess my number! \(range 1 -\ ] :max "\):\ )
make "guess first readlist
ifelse (or (not numberp :guess) (lessp :guess 1) (greaterp :guess :max)) [
print sentence [Guess must be a number between 1 and] (word :max ".)
] [
make "guesses (:guesses + 1)
ifelse lessp :guess :number [
print [Too low!]
] [ifelse equalp :guess :number [
(print [You got it in] :guesses "guesses!)
stop
] [
print [Too high!]
]]
]
]
end </lang>
Sample run:
? guess Guess my number! (range 1 - 100): 50 Too low! Guess my number! (range 1 - 100): 75 Too high! Guess my number! (range 1 - 100): 67 Too low! Guess my number! (range 1 - 100): 71 Too high! Guess my number! (range 1 - 100): 69 You got it in 5 guesses!
Lua
<lang Lua>math.randomseed(os.time()) me_win=false my_number=math.random(1,10) while me_win==false do print "Guess my number from 1 to 10:" your_number = io.stdin:read'*l' if type(tonumber(your_number))=="number" then your_number=tonumber(your_number) if your_number>10 or your_number<1 then print "Your number was not between 1 and 10, try again." elseif your_number>my_number then print "Your number is greater than mine, try again." elseif your_number<my_number then print "Your number is smaller than mine, try again." elseif your_number==my_number then print "That was correct." me_win=true end else print "Your input was not a number, try again." end end </lang>
Output: Guess my number from 1 to 10: 4 Your number is smaller than mine, try again. Guess my number from 1 to 10: 8 Your number is greater than mine, try again. Guess my number from 1 to 10: 5 That was correct.
Maple
<lang Maple>GuessANumber := proc(low, high)
local number, input;
randomize():
printf( "Guess a number between %d and %d:\n:> ", low, high );
number := rand(low..high)();
do
input := parse(readline());
if input > number then
printf("Too high, try again!\n:> ");
elif input < number then
printf("Too low, try again!\n:> ");
else
printf("Well guessed! The answer was %d.\n", number);
break;
end if;
end do:
end proc:</lang> <lang Maple>GuessANumber(2,5);</lang>
Mathematica / Wolfram Language
<lang mathematica>guessnumber[min_, max_] :=
Module[{number = RandomInteger[{min, max}], guess},
While[guess =!= number,
guess = Input[
If[guess > number, "Too high.Guess again.",
"Too low.Guess again.",
"Guess a number between " <> ToString@min <> " and " <>
ToString@max <> "."]]];
CreateDialog[{"Well guessed!", DefaultButton[]}]];
guessnumber[1, 10]</lang>
MATLAB / Octave
Tested in MATLAB. Untested in Octave.
<lang MATLAB>function guess_a_number(low, high)
if nargin < 1 || ~isnumeric(low) || length(low) > 1 || isnan(low)
low = 1;
end; if nargin < 2 || ~isnumeric(high) || length(high) > 1 || isnan(high)
high = low+9;
elseif low > high
[low, high] = deal(high, low);
end
n = floor(rand(1)*(high-low+1))+low; gs = input(sprintf('Guess an integer between %i and %i (inclusive): ', low, high), 's'); while gs % No guess quits the game
g = str2double(gs);
if length(g) > 1 || isnan(g) || g < low || g > high
gs = input('Invalid input, guess again: ', 's');
elseif g < n
gs = input('Too low, guess again: ', 's');
elseif g > n
gs = input('Too high, guess again: ', 's');
else
disp('Good job, you win!')
gs = ;
end
end</lang>
MAXScript
<lang MAXScript> Range = [1,100] randomNumber = (random Range.x Range.y) as integer clearListener() while true do ( userVal = getKBValue prompt:("Enter a number between "+(range[1] as integer) as string+" and "+(range[2] as integer) as string+": ") if userVal == randomNumber do (format "\nWell guessed!\n"; exit with OK) case of ( (classOf userVal != classof randomNumber): (format "\nBad number!\n") (userVal > Range[2] or userVal < Range[1]): (format "\nNumber out of range\n") (userVal > randomNumber): (format "\nToo high!\n") (userVal < randomNumber): (format "\nToo low!\n") ) ) </lang>
Output: <lang MAXSCRIPT> Enter a number between 1 and 100: 5 Too low! Enter a number between 1 and 100: 9.0 Bad number! Enter a number between 1 and 100: 145 Number out of range Enter a number between 1 and 100: 95 Too low! Enter a number between 1 and 100: 99 Too high! Enter a number between 1 and 100: 97 Well guessed! OK </lang>
Mirah
<lang mirah>def getInput:int
s = System.console.readLine() Integer.parseInt(s)
end
number = int(Math.random() * 10 + 1)
puts "Guess the number between 1 and 10"
guessed = false
while !guessed do
begin
userNumber = getInput
if userNumber == number
guessed = true
puts "You guessed it."
elsif userNumber > number
puts "Too high."
else
puts "Too low."
end
rescue NumberFormatException => e
puts "Please enter an integer."
end
end</lang>
Modula-2
<lang modula2>MODULE guessf;
IMPORT InOut, Random, NumConv, Strings;
VAR number, guess : CARDINAL;
input : Strings.String;
OK, Done : BOOLEAN;
BEGIN
number := Random.nr (1000);
InOut.WriteString ("I have chosen a number below 1000; please try to guess it.");
InOut.WriteLn;
REPEAT
REPEAT
InOut.WriteString ("Enter your guess : "); InOut.WriteBf;
InOut.ReadString (input);
NumConv.Str2Num (guess, 10, input, OK);
IF NOT OK THEN
InOut.WriteString (input);
InOut.WriteString (" is not a valid number...");
InOut.WriteLn
END
UNTIL OK;
InOut.WriteString ("Your guess is ");
IF number = guess THEN
Done := TRUE;
InOut.WriteString ("spot on!")
ELSE
Done := FALSE;
IF guess > number THEN
InOut.WriteString ("too high.")
ELSE
InOut.WriteString ("too low.")
END
END;
InOut.WriteLn
UNTIL Done;
InOut.WriteString ("Thank you for playing; have a nice day!");
InOut.WriteLn
END guessf.</lang>
I have chosen a number below 1000; please try to guess it. Enter your guess : 500 Your guess is too low. Enter your guess : 750 Your guess is too high. Enter your guess : 625 Your guess is too high. Enter your guess : kwak kwak is not a valid number... Enter your guess : 531 Your guess is spot on! Thank you for playing; have a nice day!
Nemerle
<lang Nemerle>using System; using System.Console;
module GuessHints {
Main() : void
{
def rand = Random();
def secret = rand.Next(1, 101);
mutable guess = 0;
def GetGuess() : int {Int32.Parse(ReadLine())}
WriteLine("Guess a number between 1 and 100:");
do
{
guess = GetGuess();
match(guess.CompareTo(secret))
{
|(-1) => WriteLine("Too low! Guess again:")
|1 => WriteLine("Too high! Guess again:")
|0 => WriteLine("Well guessed!")
}
} while (guess != secret)
}
}</lang>
NetRexx
<lang NetRexx>/* NetRexx */ options replace format comments java crossref symbols nobinary
parse arg lo hi . if lo = | lo = '.' then lo = 1 if hi = | hi = '.' then hi = 100 if lo > hi then parse (hi lo) lo hi -- make sure lo is < hi rg = Random() tries = 0 guessThis = rg.nextInt(hi - lo) + lo
say say 'Rules: Guess a number between' lo 'and' hi say ' Use QUIT or . to stop the game' say ' Use TELL to get the game to tell you the answer.' say say 'Starting...' say
loop label g_ forever
say 'Try guessing a number between' lo 'and' hi
parse ask guess .
select
when guess.upper = 'QUIT' | guess = '.' then do
say 'You asked to leave the game. Goodbye...'
leave g_
end
when guess.upper = 'TELL' | guess = '.' then do
say 'The number you were looking for is' guessThis
end
when \guess.datatype('w') then do
say guess 'is not a whole number. Try again.'
end
when guess = guessThis then do
tries = tries + 1
say 'Well guessed!' guess 'is the correct number.'
say 'It took you' tries 'tries.'
leave g_
end
when guess < lo then do
tries = tries + 1
say guess 'is below the lower limit of' lo
end
when guess > hi then do
tries = tries + 1
say guess 'is above the upper limit of' hi
end
when guess < guessThis then do
tries = tries + 1
say guess 'is too low. Try again.'
end
when guess > guessThis then do
tries = tries + 1
say guess 'is too high. Try again.'
end
otherwise do
say guess 'is an unexpected value.'
end
end
end g_
return </lang>
NewLISP
<lang NewLISP>; guess-number-feedback.lsp
- oofoe 2012-01-19
- http://rosettacode.org/wiki/Guess_the_number/With_feedback
(seed (time-of-day)) ; Initialize random number generator from clock. (setq low -5
high 62
number (+ low (rand (- high low)))
found nil
)
(print "I'm thinking of a number between " low " and " high ".")
(while (not found)
(print " What's your guess? ")
(setq guess (int (read-line) 'bad))
(print (cond ((= 'bad guess) "That's not a number! Try again!")
((or (< guess low) (> guess high))
(string "My number is between " low
" and " high ". Try again!"))
((< number guess) "Try a little lower...")
((> number guess) "Maybe a bit higher...")
((= number guess) (setq found true) "Exactly right!")))
)
(println "\nWell guessed! Congratulations!")
(exit)</lang>
Sample output:
I'm thinking of a number between -5 and 62. What's your guess? No idea. That's not a number! Try again! What's your guess? 99 My number is between -5 and 62. Try again! What's your guess? -5 Maybe a bit higher... What's your guess? 30 Try a little lower... What's your guess? 15 Try a little lower... What's your guess? 0 Maybe a bit higher... What's your guess? 3 Try a little lower... What's your guess? 1 Exactly right! Well guessed! Congratulations!
Nim
<lang nim>import math, rdstdin, strutils
randomize()
let iRange = 1..100
echo "Guess my target number that is between ", iRange.a, " and ", iRange.b, " (inclusive)." let target = random(iRange) var answer, i = 0 while answer != target:
inc i
let txt = readLineFromStdin("Your guess " & $i & ": ")
try: answer = parseInt(txt)
except ValueError:
echo " I don't understand your input of '", txt, "'"
continue
if answer < iRange.a or answer > iRange.b: echo " Out of range!"
elif answer < target: echo " Too low."
elif answer > target: echo " Too high."
else: echo " Ye-Haw!!"
echo "Thanks for playing."</lang> Output:
Guess my target number that is between 1 and 100 (inclusive). Your guess 1: 50 Too high. Your guess 2: 300 Out of range! Your guess 3: -10 Out of range! Your guess 4: foo I don't understand your input of 'foo' Your guess 5: 35 Too low. Your guess 6: 42 Too high. Your guess 7: 38 Too low. Your guess 8: 40 Too low. Your guess 9: 41 Ye-Haw!! Thanks for playing.
Objeck
<lang objeck>use IO;
bundle Default {
class GuessNumber {
function : Main(args : String[]) ~ Nil {
Guess();
}
function : native : Guess() ~ Nil {
done := false;
"Guess the number which is between 1 and 10 or 'n' to quite: "->PrintLine();
rand_num := (Float->Random() * 10.0)->As(Int) + 1;
while(done = false) {
guess := Console->ReadString();
number := guess->ToInt();
if(number <> 0) {
if(number <> rand_num) {
Console->Print("Your guess was too ")
->Print(number < rand_num ? "low" : "high")
->Print(".\nGuess again: ");
}
else {
"Hurray! You guessed correctly!"->PrintLine();
done := true;
};
}
else {
if(guess->StartsWith("q") | guess->StartsWith("Q")) {
done := true;
};
};
};
}
}
} </lang>
OCaml
<lang ocaml>let rec _read_int() =
try read_int() with _ -> print_endline "Please give a cardinal numbers."; (* TODO: what is the correct word? cipher, digit, figure or numeral? *) _read_int() ;;
let () =
print_endline "Please give a set limits (two integers):";
let a = _read_int()
and b = _read_int() in
let a, b =
if a < b
then (a, b)
else (b, a)
in
Random.self_init();
let target = a + Random.int (b - a) in
Printf.printf "I have choosen a number between %d and %d\n%!" a b;
print_endline "Please guess it!";
let rec loop () =
let guess = _read_int() in
if guess = target then
begin
print_endline "The guess was equal to the target.\nCongratulation!";
exit 0
end;
if guess < a || guess > b then
print_endline "The input was inappropriate."
else if guess > target then
print_endline "The guess was higher than the target."
else if guess < target then
print_endline "The guess was less than the target.";
loop ()
in
loop ()</lang>
Playing the game:
$ ocaml inapropriate.ml Please give a set limits (two integers): 3 7 I have choosen a number between 3 and 7 Please guess it! 6 The guess was higher than the target. 7 The guess was higher than the target. 8 The input was inappropriate. 3 The guess was less than the target. 4 The guess was equal to the target. Congratulation!
$ ocaml inapropriate.ml Please give a set limits (two integers): 2 6 I have choosen a number between 2 and 6 Please guess it! three Please give a cardinal numbers.
Octave
<lang Octave>function guess_a_number(low,high) % Guess a number (with feedback) % http://rosettacode.org/wiki/Guess_the_number/With_feedback
if nargin<1, low=1; end; if nargin<2, high=10; end;
n = floor(rand(1)*(high-low+1))+low; [guess,state] = str2num(input(sprintf('Guess a number between %i and %i: ',low,high),'s')); while (~state || guess~=n) if guess < n, g = input('to low, guess again: ','s'); [guess, state] = str2num(g); elseif guess > n, g = input('to high, guess again: ','s'); [guess, state] = str2num(g); end; while ~state g = input('invalid input, guess again: ','s'); [guess, state] = str2num(g); end end disp('Well guessed!')</lang>
Oforth
<lang Oforth>func: guessNumber(a, b) { | n g |
b a - rand a + 1 - ->n
while(true) [
System.Out "Guess a number between " << a << " and " << b << " : " << drop
while(System.Console askln asInteger dup -> g isNull) [ "Not a number " println ]
g n == ifTrue: [ "You found it !" println return ]
"Your number is " print
g n < ifTrue: [ "less than the target" println continue ]
"greater than the target" println
]
}</lang>
PARI/GP
<lang parigp>guess_the_number(N=10)={ a=random(N); print("guess the number between 0 and "N); for(x=1,N, if(x>1, if(b>a, print("guess again lower") , print("guess again higher") ); b=input(); if(b==a,break()) ); print("You guessed it correctly") };</lang>
ooRexx
While the program for REXX works perfectly well with ooRexx, here is a version written in an alternate (my) style.
Select instead of a series of If's simple comparison instead of strict different indentations. entering ? shows the number we are looking for
This program should, of course, also work with all other Rexxes <lang ooRexx> /*REXX program that plays the guessing (the number) game. */
low=1 /*lower range for the guessing game.*/
high=100 /*upper range for the guessing game.*/ try=0 /*number of valid attempts. */ r=random(1,100) /*get a random number (low-->high). */
do forever
say
say "guess the number, it's between" low 'and' high '(inclusive)',
'or enter quit to end the game.'
say
pull g
say
g=space(g)
Select
When g= then iterate
When g='QUIT' then exit
When g='?' then Do
Say 'The number you are looking for is' r
Iterate
End
When \datatype(g,'W') then do
call ser g "isn't a valid number"
iterate
end
When g<low then do
call ser g 'is below the lower limit of' low
iterate
end
When g>high then do
call ser g 'is above the higher limit of' high
iterate
end
When g=r then do
try=try+1
Leave
End
Otherwise Do
try=try+1
if g>r then what='high'
else what='low'
say 'your guess of' g 'is too' what'.'
end
end
end
say tries='tries' if try=1 then
say 'Congratulations!, you guessed the number in 1 try. Did you cheat?'
Else
say 'Congratulations!, you guessed the number in' try 'tries.'
say exit
ser: say; say '*** error ! ***'; say arg(1); say; return </lang>
Pascal
See Delphi
Perl
<lang Perl>sub prompt { my $prompt = shift; while (1) { print "\n", $prompt, ": "; # type ^D, q, quit, quagmire, etc to quit defined($_ = <STDIN>) and !/^\s*q/ or exit;
return $_ if /^\s*\d+\s*$/s; $prompt = "Please give a non-negative integer"; } }
my $tgt = int(rand prompt("Hola! Please tell me the upper bound") + 1); my $tries = 1;
$tries++, print "You guessed too ", ($_ == -1 ? "high" : "low"), ".\n" while ($_ = $tgt <=> prompt "Your guess");
print "Correct! You guessed it after $tries tries.\n";</lang>
Perl 6
<lang perl6>my $maxnum = prompt("Hello, please give me an upper boundary: "); until 0 < $maxnum < Inf {
say "Oops! The upper boundary should be > 0 and not Inf";
$maxnum = prompt("Please give me a valid upper boundary: ");
}
my $count = 0; my $number = (1..$maxnum).pick;
say "I'm thinking of a number from 1 to $maxnum, try to guess it!"; repeat until my $guessed-right {
given prompt("Your guess: ") {
when /^[e|q]/ { say 'Goodbye.'; exit; }
when not 1 <= $_ <= $maxnum {
say "You really should give me a number from 1 to $maxnum."
}
$count++;
when $number { $guessed-right = True }
when $number < $_ { say "Sorry, my number is smaller." }
when $number > $_ { say "Sorry, my number is bigger." }
}
} say "Great you guessed right after $count attempts!";</lang>
Hello, please give me an upper boundary: 10 I'm thinking of a number from 1 to 10, try to guess it! Your guess: 5 Sorry, my number is bigger. Your guess: 7 Sorry, my number is smaller. Your guess: 6 Great you guessed right after 3 attempts!
Phix
<lang Phix>constant lower_limit = 0, upper_limit = 100 integer secret = rand(upper_limit-(lower_limit-1))+lower_limit-1 printf(1,"Guess the number between %d and %d: ", lower_limit & upper_limit) while 1 do
integer guess = prompt_number("", lower_limit & upper_limit)
if guess=secret then exit end if
printf(1,"Your guess is too %s.\nTry again: ",{iff(guess>secret?"high":"low")})
end while puts(1,"You got it!\n")</lang>
PHP
<lang php> <?php
session_start();
if(isset($_SESSION['number'])) {
$number = $_SESSION['number'];
} else {
$_SESSION['number'] = rand(1,10);
}
if($_POST["guess"]){
$guess = htmlspecialchars($_POST['guess']);
echo $guess . "
";
if ($guess < $number)
{
echo "Your guess is too low"; }
elseif($guess > $number) {
echo "Your guess is too high"; }
elseif($guess == $number) {
echo "You got the correct number!"; }
} ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Guess A Number</title> </head>
<body>
<form action="<?=$_SERVER['PHP_SELF'] ?>" method="post" name="guess-a-number">
<label for="guess">Guess A Number:</label>
<input type="text" name="guess" />
<input name="number" type="hidden" value="<?= $number ?>" />
<input name="submit" type="submit" />
</form>
</body>
</html>
</lang>
PicoLisp
<lang PicoLisp>(de guessTheNumber ()
(use (Low High Guess)
(until
(and
(prin "Enter low limit : ")
(setq Low (read))
(prin "Enter high limit: ")
(setq High (read))
(> High Low) ) )
(seed (time))
(let Number (rand Low High)
(loop
(prin "Guess what number I have: ")
(T (= Number (setq Guess (read)))
(prinl "You got it!") )
(prinl
"Your guess is too "
(if (> Number Guess) "low" "high")
"." ) ) ) ) )</lang>
Output:
: (guessTheNumber) Enter low limit : 1 Enter high limit: 64 Guess what number I have: 32 Your guess is too high. Guess what number I have: 16 Your guess is too low. Guess what number I have: 24 You got it!
PureBasic
<lang PureBasic>OpenConsole()
Repeat
; Ask for limits, with sanity check
Print("Enter low limit : "): low =Val(Input())
Print("Enter high limit: "): High =Val(Input())
Until High>low
TheNumber=Random(High-low)+low Debug TheNumber Repeat
Print("Guess what number I have: "): Guess=Val(Input())
If Guess=TheNumber
PrintN("You got it!"): Break
ElseIf Guess < TheNumber
PrintN("Your guess is to low.")
Else
PrintN("Your guess is to high.")
EndIf
ForEver</lang>
Prolog
<lang prolog>main :-
play_guess_number.
/* Parameteres */
low(1). high(10).
/* Basic Game Logic */
play_guess_number :-
low(Low),
high(High),
random(Low, High, N),
tell_range(Low, High),
repeat, % roughly, "repeat ... (until) Guess == N "
ask_for_guess(Guess),
give_feedback(N, Guess),
Guess == N.
/* IO Stuff */
tell_range(Low, High) :-
format('Guess an integer between ~d and ~d.~n', [Low,High]).
ask_for_guess(Guess) :-
format('Guess the number: '),
read(Guess).
give_feedback(N, Guess) :-
( \+integer(Guess) -> writeln('Invalid input.')
; Guess < N -> writeln('Your guess is too low.')
; Guess > N -> writeln('Your guess is too high.')
; Guess =:= N -> writeln("Correct!")
).</lang>
Input in the standard Prolog top level is terminated with a `.`: E.g.,
<lang prolog>?- main. Guess an integer between 1 and 10. Guess the number: a. Invalid input. Guess the number: 3. Your guess is too low.</lang>
Python
<lang python>import random
inclusive_range = (1, 100)
print("Guess my target number that is between %i and %i (inclusive).\n"
% inclusive_range)
target = random.randint(*inclusive_range) answer, i = None, 0 while answer != target:
i += 1
txt = input("Your guess(%i): " % i)
try:
answer = int(txt)
except ValueError:
print(" I don't understand your input of '%s' ?" % txt)
continue
if answer < inclusive_range[0] or answer > inclusive_range[1]:
print(" Out of range!")
continue
if answer == target:
print(" Ye-Haw!!")
break
if answer < target: print(" Too low.")
if answer > target: print(" Too high.")
print("\nThanks for playing.")</lang>
Sample Game
Guess my target number that is between 1 and 100 (inclusive). Your guess(1): 50 Too high. Your guess(2): 25 Too low. Your guess(3): 40 Too high. Your guess(4): 30 Too low. Your guess(5): 35 Too high. Your guess(6): 33 Too high. Your guess(7): 32 Too high. Your guess(8): 31 Ye-Haw!! Thanks for playing.
Sample trapped Errors
Guess my target number that is between 1 and 100 (inclusive). Your guess(1): 0 Out of range! Your guess(2): 101 Out of range! Your guess(3): Howdy I don't understand your input of 'Howdy' ? Your guess(4):
R
<lang R>GuessANumber <- function( low, high ) {
print( sprintf("Guess a number between %d and %d until you get it right", low, high ) );
X <- low:high;
number <- sample( X, 1 );
repeat {
input <- as.numeric(readline());
if (input > number) {
print("Too high, try again"); }
else if (input < number) {
print("Too low, try again");}
else {
print("Correct!");
break; }
}
}</lang>
Racket
<lang Racket>#lang racket (define min 1) (define max 10)
(define (guess-number (target (+ min (random (- max min)))))
(define guess (read))
(cond ((not (number? guess)) (display "That's not a number!\n" (guess-number target)))
((or (> guess max) (> min guess)) (display "Out of range!\n") (guess-number target))
((> guess target) (display "Too high!\n") (guess-number target))
((< guess target) (display "Too low!\n") (guess-number target))
(else (display "Well guessed!\n"))))
(display (format "Guess a number between ~a and ~a\n" min max)) (guess-number)</lang>
Retro
<lang Retro>: high|low ( gn-g$ )
over > [ "high" ] [ "low" ] if ;
- checkGuess ( gn-gf || f )
2over = [ "You guessed correctly!\n" puts 2drop 0 ]
[ high|low "Sorry, your guess was too %s.\nTry again.\n" puts -1 ] if ;
- think ( -n )
random abs 100 mod 1+ ;
- guess ( - )
"I'm thinking of a number between 1 and 100.\n" puts "Try to guess it!\n" puts think [ getToken toNumber checkGuess ] while "You got it!\n" puts ;
</lang>
REXX
To make the program more engaging, randomized words for the hint are used. <lang rexx>/*REXX program that plays the guessing (the number) game. */
low=1 /*lower range for guessing game. */
high=100 /*upper range for guessing game. */ try=0 /*number of valid attempts. */ r=random(1,100) /*get a random # (low ──> high).*/
lows='too_low too_small too_little below under underneath too_puny'
highs='too_high too_big too_much above over over_the_top too_huge' er!='*** error! ***' prompt=centre("guess the number, it's between" low 'and',
high '(inclusive) ───or─── Quit:',79,"─")
do ask=0; say; say prompt; say; pull g; g=space(g); say
do validate=0
select
when g== then iterate ask
when abbrev('QUIT',g,1) then exit
when words(g)\==1 then say er! 'too many numbers entered:' g
when \datatype(g,'N') then say er! g "isn't numeric"
when \datatype(g,'W') then say er! g "isn't a whole number"
when g<low then say er! g 'is below the lower limit of' low
when g>high then say er! g 'is above the higher limit of' high
otherwise leave validate
end /*select*/
iterate ask
end /*validate*/
try=try+1
if g=r then leave
if g>r then what=word(highs,random(1,words(highs)))
else what=word( lows,random(1,words( lows)))
say 'your guess of' g "is" translate(what'.',,"_")
end /*ask*/
if try==1 then say 'Gadzooks!!! You guessed the number right away!'
else say 'Congratulations!, you guessed the number in' try "tries."
/*stick a fork in it, we're done.*/</lang>
Ring
<lang ring>fr = 1 t0 = 10 while true see "Hey There,
============
I'm thinking of a number between " + fr + " and " + t0 + ", Can you guess it?? Guess :> " give x n = nrandom(fr,t0) if x = n see "
Congratulations :D
** Your guess was right You Are Genius :D **
"
exit
else
see "Oops its not true, you were just few steps"
if x > n see " up :)" else see " down :)" ok
see copy(nl,3)
ok
end
func nRandom s,e while true d = random(e) if d >= s return d ok end</lang>
Ruby
<lang ruby>number = rand(1..10)
puts "Guess the number between 1 and 10"
loop do
begin
user_number = Integer(gets)
if user_number == number
puts "You guessed it."
break
elsif user_number > number
puts "Too high."
else
puts "Too low."
end
rescue ArgumentError
puts "Please enter an integer."
end
end</lang>
Rust
<lang rust>use std::io::stdin; use rand::{Rng, thread_rng};
extern crate rand;
const LOWEST: isize = 1; const HIGHEST: isize = 100;
fn main() {
let mut rng = thread_rng();
loop {
let number: isize = rng.gen_range(LOWEST, HIGHEST + 1);
let mut num_guesses = 0;
println!("I have chosen my number between {} and {}. You know what to do", LOWEST, HIGHEST);
loop {
num_guesses += 1;
let mut line = String::new();
let res = stdin().read_line(&mut line);
let input: Option<isize> = res.ok().map_or(None, |_| line.trim().parse().ok());
match input {
None => println!("numbers only, please"),
Some(n) if n == number => {
println!("you got it in {} tries!", num_guesses);
break;
}
Some(n) if n < number => println!("too low!"),
Some(n) if n > number => println!("too high!"),
Some(_) => println!("something went wrong")
}
}
}
}</lang>
I have chosen my number between 0 and 100. You know what to do 50 too high! 25 too high! 12 too low! 18 too low! 21 too low! 23 you got it in 6 tries!
Scheme
<lang scheme>(define maximum 5) (define minimum -5) (define number (+ (random (- (+ maximum 1) minimum)) minimum))
(display "Pick a number from ") (display minimum) (display " through ") (display maximum) (display ".\n> ") (do ((guess (read) (read))) ((eq? guess number))
(if (or (>= guess maximum) (< guess minimum))
(display "Out of range!\n> ")
(begin
(if (> guess number)
(display "Too high!\n> "))
(if (< guess number)
(display "Too low!\n> ")))))
(display "Correct!\n")</lang>
Seed7
<lang seed7>$ include "seed7_05.s7i";
const integer: lower_limit is 0; const integer: upper_limit is 100;
const proc: main is func
local
var integer: number is 0;
var integer: guess is 0;
begin
number := rand(lower_limit, upper_limit);
write("Guess the number between " <& lower_limit <& " and " <& upper_limit <& ": ");
while succeeds(readln(guess)) and number <> guess do
write("Your guess was too ");
if number < guess then
writeln("high.");
else
writeln("low.");
end if;
write("Try again: ");
end while;
if number = guess then
writeln("You guessed correctly!");
else
writeln("You gave up!");
end if;
end func;</lang>
Sidef
<lang ruby>var number = rand(1..10); say "Guess the number between 1 and 10";
loop {
given(var n = Sys.scanln("> ").to_i) {
when (number) { say "You guessed it."; break }
case (n < number) { say "Too low" }
default { say "Too high" }
}
}</lang>
Sparkling
<lang sparkling>printf("Lower bound: "); let lowerBound = toint(getline());
printf("Upper bound: "); let upperBound = toint(getline());
assert(upperBound > lowerBound, "upper bound must be greater than lower bound");
seed(time()); let n = floor(random() * (upperBound - lowerBound) + lowerBound); var guess;
print();
while true {
printf("Your guess: ");
guess = toint(getline());
if guess < n {
print("too low");
} else if guess > n {
print("too high");
} else {
print("You guessed it!");
break;
}
}</lang>
Swift
<lang Swift>import Cocoa
var found = false
let randomNum = Int(arc4random_uniform(100) + 1)
println("Guess a number between 1 and 100\n")
while (!found) {
var fh = NSFileHandle.fileHandleWithStandardInput()
println("Enter a number: ")
let data = fh.availableData
let str = NSString(data: data, encoding: NSUTF8StringEncoding)
if (str?.integerValue == randomNum) {
found = true
println("Well guessed!")
} else if (str?.integerValue < randomNum) {
println("Good try but the number is more than that!")
} else if (str?.integerValue > randomNum) {
println("Good try but the number is less than that!")
}
}</lang>
Tcl
<lang tcl>set from 1 set to 10 set target [expr {int(rand()*($to-$from+1) + $from)}] puts "I have thought of a number from $from to $to." puts "Try to guess it!" while 1 {
puts -nonewline "Enter your guess: "
flush stdout
gets stdin guess
if {![string is int -strict $guess] || $guess < $from || $guess > $to} {
puts "Your guess should be an integer from $from to $to (inclusive)."
} elseif {$guess > $target} {
puts "Your guess was too high. Try again!"
} elseif {$guess < $target} {
puts "Your guess was too low. Try again!"
} else {
puts "Well done! You guessed it." break
}
}</lang> Sample output:
I have thought of a number from 1 to 10. Try to guess it! Enter your guess: 2 Your guess was too low. Try again! Enter your guess: skfg Your guess should be an integer from 1 to 10 (inclusive). Enter your guess: 9 Your guess was too high. Try again! Enter your guess: 5 Your guess was too low. Try again! Enter your guess: 7 Your guess was too high. Try again! Enter your guess: 6 Well done! You guessed it.
TUSCRIPT
<lang tuscript> $$ MODE TUSCRIPT PRINT "Find the luckynumber (7 tries)!" SET luckynumber=RANDOM NUMBERS (1,100,1) LOOP round=1,7 SET message=CONCAT ("[",round,"] Please insert a number") ASK $message: n=""
IF (n!='digits') THEN PRINT "wrong insert: ",n," Please insert a digit" ELSEIF (n>100.or.n<1) THEN PRINT "wrong insert: ",n," Please insert a number between 1-100" ELSEIF (n==#luckynumber) THEN PRINT "BINGO" EXIT ELSEIF (n.gt.#luckynumber) THEN PRINT "too big" ELSEIF (n.lt.#luckynumber) THEN PRINT "too small"
ENDIF IF (round==7) PRINT/ERROR "You've lost: luckynumber was: ",luckynumber ENDLOOP </lang> Output:
Find the luckynumber (7 tries)! [1] Please insert a number >51 too small [2] Please insert a number >76 too small [3] Please insert a number >89 too big [4] Please insert a number >80 too small [5] Please insert a number >84 too small [6] Please insert a number >86 too small [7] Please insert a number >88 too big @@@@@@@@ You've lost: luckynumber was: 87
UNIX Shell
<lang sh>function guess {
-n $BASH_VERSION && shopt -s extglob -n $ZSH_VERSION && set -o KSH_GLOB local -i max=${1:-100} local -i number=RANDOM%max+1 local -i guesses=0
local guess
while true; do
echo -n "Guess my number! (range 1 - $max): "
read guess
if [[ "$guess" != +([0-9]) ]] || (( guess < 1 || guess > max )); then
echo "Guess must be a number between 1 and $max."
continue
fi
let guesses+=1
if (( guess < number )); then
echo "Too low!"
elif (( guess == number )); then
echo "You got it in $guesses guesses!"
break
else
echo "Too high!"
fi
done
}</lang>
Sample run:
$ guess Guess my number! (range 1 - 100): 50 Too low! Guess my number! (range 1 - 100): 75 Too high! Guess my number! (range 1 - 100): 62 Too low! Guess my number! (range 1 - 100): 69 Too low! Guess my number! (range 1 - 100): 72 You got it in 5 guesses!
Vala
<lang vala> void main(){ const int from = 1; const int to = 100;
int random = Random.int_range(from, to); int guess = 0;
while (guess != random){ stdout.printf("Guess the target number that's between %d and %d.\n", from, to);
string? num = stdin.read_line (); num.canon("0123456789", '!'); // replaces any character in num that's not in "0123456789" with "!"
if ("!" in num) stdout.printf("Please enter a number!\n");
else{ guess = int.parse(num);
if (guess > random && guess <= to) stdout.printf("Too high!\n"); if (guess < random && guess >= from) stdout.printf("Too low!\n"); if (guess == random) stdout.printf("You guess it! You win!\n"); if (guess < from || guess > to) stdout.printf("%d Your guess isn't even in the right range!\n", guess); }
}//while } // main </lang>
Shorter but no error checking <lang vala>int main() {
int guess, x = Random.int_range(1, 10);
stdout.printf("Make a guess (1-10): ");
while((guess = int.parse(stdin.read_line())) != x) {
stdout.printf("%s! Try again: ", x < guess ? "Lower" : "Higher");
}
stdout.printf("Got it!\n");
return 0;
}</lang>
XPL0
<lang XPL0>include c:\cxpl\codes; int Lo, Hi, C, Guess, Number;
[loop [Text(0, "Low limit: "); Lo:= IntIn(0);
Text(0, "High limit: "); Hi:= IntIn(0);
if Lo < Hi then quit;
Text(0, "Low limit must be lower!^M^J^G");
];
Number:= Ran(Hi-Lo+1)+Lo; Text(0, "I'm thinking of a number between "); IntOut(0, Lo); Text(0, " and "); IntOut(0, Hi); Text(0, ".^M^J"); repeat Text(0, "Can you guess the number? ");
loop [C:= ChIn(0);
if C>=^0 & C<=^9 then quit;
Text(0, "Please enter a number in the given range.^M^J");
OpenI(0);
];
Backup; Guess:= IntIn(0);
Text(0, if Guess = Number then "Correct!"
else if Guess > Number then "Nope, too high."
else "You're too low.");
CrLf(0);
until Guess = Number; ]</lang>
Example output:
Low limit: 1 High limit: 10 I'm thinking of a number between 1 and 10. Can you guess the number? maybe Please enter a number in the given range. 3 You're too low. Can you guess the number? 6 You're too low. Can you guess the number? 8 Correct!
zkl
<lang zkl>r:=(0).random(10)+1; while(1){
n:=ask("Num between 1 & 10: ");
try{n=n.toInt()}catch{ println("Number please"); continue; }
if(n==r){ println("Well guessed!"); break; }
println((n<r) and "small" or "big");
}</lang>
- Output:
Num between 1 & 10: foo Number please Num between 1 & 10: 5 big Num between 1 & 10: 3 big Num between 1 & 10: 2 big Num between 1 & 10: 1 Well guessed!
- Programming Tasks
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