C Light OJ prob

#include <stdio.h>

int main()
{
    int a,b,T,sum;
    fscanf(stdin,"%d", &T);
    while(T>0){
        T=T-1;
        fscanf(stdin,"%d %d", &a, &b);
        sum=a+b;
        printf("%d", sum);

    }
    return 0;
}