Input/Output for pairs of numbers

Input/Output for pairs of numbers is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

From lines of input starting with a line containing the numbers of pairs to follows, followed by that number of pairs of integers separated by a space on separate lines from STDIN, output the sum of each pair to STDOUT.

Sample input with corresponding output

Input

5
1 2
10 20
-3 5
100 2
5 5

Output

3
30
2
102
10

C++

<lang cpp>#include <iostream> using namespace std;

int doStuff(int a, int b) {

   return a + b;

}

int main() { int t; cin >> t; for(int j=0; j<t; j++){ int a; int b; cin >> a; cin >> b; cout << doStuff(a, b) << endl;; } return 0; }</lang>

Java

<lang java>import java.util.Scanner;

public class Main {

public static int doStuff(int a, int b){ int sum = a+b; return sum; }

public static void main(String[] args) { Scanner in = new Scanner(System.in);

int n = in.nextInt(); for(int i=0; i<n; i++){ int a = in.nextInt(); int b= in.nextInt(); int result = doStuff(a, b); System.out.println(result); } } }</lang>

Python

<lang python>def do_stuff(a, b): return a + b

t = input() for x in range(0, t): a, b = raw_input().strip().split() print do_stuff(int(a), int(b))</lang>

Python: Alternative

Or without the function do_stuff() and that works for Python 3 and Python 2: <lang python>>>> try: raw_input except NameError: raw_input = input

>>> for i in range(int(raw_input())): print(sum(int(numberstring) for numberstring in raw_input().strip().split()))

5 1 2 3 10 20 30 -3 5 2 100 2 102 5 5 10 >>> </lang> (All but the first line of single numbers, (the 5), is output from the program).

Python: With prompts

More than is asked for by the task, but if working interactively then the following version adds prompts. <lang python>>>> for i in range(int(raw_input('lines: '))): print(sum(int(numberstring)

                 for numberstring in raw_input('two numbers: ').strip().split()))

lines: 5 two numbers: 1 2 3 two numbers: 10 20 30 two numbers: -3 5 2 two numbers: 100 2 102 two numbers: 5 5 10 >>> </lang>

Ruby

<lang ruby>def do_stuff(a, b) a + b end

t = gets.to_i for i in 1..t do a, b = gets.strip.split.map {|i| i.to_i} puts do_stuff(a, b) end</lang>