### A+B for Input-Output Practice (I)

Time Limit: 1000 ms Memory Limit: 65536 KiB

#### Problem Description

Too easy?! Of course! I specially designed the problem for acm beginners.

You must have found that some problems have the same titles with this one, yes, all these problems were designed for the same aim

#### Input

The input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.

#### 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

#### Sample Output

6
30

#### Hint

//C语言
#include < stdio.h >
int main()   //把main函数定义成int类型

int a,b;
while(scanf("%d %d",&a, &b) != EOF)   // 输入结束时，scanf函数返回值为EOF，即没有数据输入时则退出while循环
printf("%d\n",a+b);
return 0; //返回值为0
}

//或者C++语言
#include < iostream >     //注意头文件的使用方法
using namespace std;
int main()
{
int a,b;
while(cin >> a >> b)
cout << a+b << endl;
return 0;
}

HDOJ