巫晉宇

#include<iostream>
#include<cstdlib>
using namespace std;
int main()
{
    int x=18;int y=4;
    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;   
}