A+B for Input-Output Practice (I)

A+B for Input-Output Practice (I)

Sample Input
1 5
10 20

Sample Output
6
30

//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;
}

#include<stdio.h>
int main()
{
   
int a,b;
while