【HDOJ】A+B for Input-Output Practice (III)

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