A+B for Input-Output Practice (III)

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博客要求计算多组整数对 a 和 b 的和。输入包含多组测试用例，每行一对整数，以 0 0 结束且该组不处理。输出为每组输入整数对 a 和 b 的和，每行一个结果。

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