A + B Problem
Calculate A + B.
Input
Each line will contain two integers A and B. Process to end of file.
Output
For each case, output A + B in one line.
Sample Input
1 1
Sample Output
2
问题链接：
https://vjudge.net/problem/hdu-1000?tdsourcetag=s_pctim_aiomsg
问题简述：
加法训练
问题分析：
多组训练的问题，要用while。
贴上代码↓↓↓
#include<iostream>
using namespace std;
int main()
{
int A, B;
while (cin >> A >> B)
{
cout << A + B << endl;
}
}