Loops/Break
You are encouraged to solve this task according to the task description, using any language you may know.
Show a while loop which prints two random numbers (newly generated each loop) from 0 to 19 (inclusive). If the first number is 10, print it, stop the loop, and do not generate the second. Otherwise, loop forever.
Ada
<lang Ada> with Ada.Text_IO; use Ada.Text_IO; with Ada.Numerics.Discrete_Random;
procedure Test_Loop_Break is
type Value_Type is range 1..20; package Random_Values is new Ada.Numerics.Discrete_Random (Value_Type); use Random_Values; Dice : Generator; A, B : Value_Type;
begin
loop
A := Random (Dice);
Put_Line (Value_Type'Image (A));
exit when A = 10;
B := Random (Dice);
Put_Line (Value_Type'Image (B));
end loop;
end Test_Loop_Break; </lang>
AutoHotkey
<lang AutoHotkey> loop { Random, var, 0, 19 if (var = 10) break output = %output%`n%var% } msgbox % output msgbox % var ; var is 10 </lang>
BASIC
<lang qbasic>do
a = int(rnd * 20) print a if a = 10 then exit loop 'EXIT FOR works the same inside FOR loops b = int(rnd * 20) print b
loop</lang>
Common Lisp
<lang lisp>(loop
(setq a (random 20))
(print a)
(if (= a 10)
(return))
(setq b (random 20))
(print b))</lang>
Forth
<lang forth>include random.fs
- main
begin 20 random dup . 10 <> while 20 random . repeat ;
\ use LEAVE to break out of a counted loop
- main
100 0 do i random dup . 10 = if leave then i random . loop ;
</lang>
Fortran
<lang fortran>program Example
implicit none
real :: r integer :: a, b
do
call random_number(r)
a = int(r * 20)
write(*,*) a
if (a == 10) exit
call random_number(r)
b = int(r * 20)
write(*,*) b
end do
end program Example</lang>
Java
<lang java>import java.util.Random;
Random rand = new Random(); while(true){
int a = rand.nextInt(20); System.out.println(a); if(a == 10) break; int b = rand.nextInt(20); System.out.println(b);
}</lang>
Perl
<lang perl>while (1) {
my $a = int(rand(20));
print "$a\n";
if ($a == 10) {
last;
}
my $b = int(rand(20));
print "$b\n";
}</lang>
PHP
<lang php>while (true) {
$a = rand(0,19);
echo "$a\n";
if ($a == 10)
break;
$b = rand(0,19);
echo "$b\n";
}</lang>
Python
<lang python>import random
while True:
a = random.randrange(20)
print a
if a == 10:
break
b = random.randrange(20)
print b</lang>
Ruby
<lang ruby>loop do
a = rand(20)
puts a
if a == 10
break
end
b = rand(20)
puts b
end</lang>
Tcl
<lang tcl>while true {
set a [expr int(20*rand())]
puts $a
if {$a == 10} {
break
}
set b [expr int(20*rand())]
puts $b
}</lang>