HDU 1091 for input-output practice(3)

problem description

Your task is to Calculate a + b.

input

Input contains multiple test cases. Each test case contains a pair of integers a and b, one pair of integers per line. A test case containing 0 0 terminates the input and this test case is not to be processed.

output

For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.

sample input

1 5
10 20
0 0

sample output

6
30

#include

int main()
{

    int a,b;

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