ACM STEP 1.1.2 A+B for Input-Output Practice (II)

#include <iostream>
using namespace std;
int main(int argc, const char * argv[])
{
    int a,b,n;
    cin >>n;
    while(n--)
    {
        cin >>a>>b;
        cout <<a+b<<endl;
    }
    return 0;
}