李宇澤

#include<iostream>
#include<cstdlib>
using namespace std;
int main()
{
    //int x;
    //int y;
    int x=23,y=7;
   
    cout<<"x+y="<<x+y<<endl;
    cout<<"x-y="<<x-y<<endl;
    cout<<"x*y="<<x*y<<endl;
    cout<<"x/y="<<x/y<<endl;
    cout<<"x%y="<<x%y<<endl;
   
    system("pause");
    return 0;
}