C :

#include<stdio.h>
int main()
{
	int a,b,sum;
	while(scanf("%d%d",&a,&b)!=EOF)
	{
		sum=a+b;
		printf("%d\n",sum);
		printf("\n");
	}
	return 0;
}

C++ :

#include<stdio.h>

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

Pascal :

program ex;
 var a,b:longint;
 begin
   while not eof do
    begin
     readln(a,b);
     writeln(a+b);
     writeln;
    end;
 end.

Java :

import java.util.*;

public class Main {
	
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		
		while (scanner.hasNext()){
			int n1 = scanner.nextInt();
			int n2 = scanner.nextInt();

			
			System.out.println(n1 + n2);
			System.out.println();
		}
		
		
	}

}

Python :

import sys
for line in sys.stdin:
    a = line.split()
    b = map(lambda x:int(x),a)
    print reduce(lambda x,y:x+y,b)
    print ''

FreeBasic :

#include<stdio.h>

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