C :

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

C++ :

#include <fstream>
using namespace std;


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