C :

#include <stdio.h>
int main()
{
   int n,a,b;
   scanf("%d",&n);
   while(n--)
  {
     scanf("%d%d",&a,&b);
     printf("%d\n",a+b);

  }
return 0;

}

C++ :

#include<stdio.h>

int main()
{
	int n;
	while(scanf("%d",&n)!=EOF)
	{
		for(int i=0;i<n;i++)
		{
			int a,b;
			scanf("%d%d",&a,&b);
			printf("%d\n",a+b);
		}
	}
	return 0;
}

Pascal :

var
  n,i:longint;
  a,b:int64;
begin
  readln(n);
  for i:=1 to n do
    begin
      readln(a,b);
      writeln(a+b);
    end;
end.

Java :

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner in = new Scanner(System.in);
		int number = in.nextInt();
		int[] a =new int[number];
		int[] b =new int[number];
		for(int i = 0;i < number ;i++){
			a[i] = in.nextInt();
			b[i] = in.nextInt();
		}
		for(int i = 0; i < number; i++){
			System.out.println(a[i]+b[i]);
		}
	}
}

Python :

import sys
for line in sys.stdin:
    a = line.split()
    if len(a) ==2:
       print int(a[0]) + int(a[1])