1001：A-B

A-B 
Time limit: 1 second(s)   Memory limit: 32768 KBytes

  
Problem
Input A and B, output A-B
 
Input
Input two values, A and B.
 
Output
Output the result of A-B.

Sample Input
2 1

Sample Output
1
 

 

源码
#include <iostream>
using namespace std;

int main()
{
    int a,b;
    while(cin >> a >> b)
        cout << a-b << endl;
}

转载于:https://www.cnblogs.com/sysuhekaifeng/archive/2008/12/12/1353652.html