#include<iostream>
using namespace std;
void main()
{  int m,n,A,B,C;
   char k;
   float D;
   cout<<"輸入兩個(gè)整數(shù)：";
   cin>>m;
   cin>>n;
   cout<<endl;
   cout<<"輸入運(yùn)算符：";
   cin>>k;
   A=m+n;
   B=m-n;
   C=m%n;
   D=m/n;
   cout<<endl;
   switch (k)
   {case '+' :cout<<A<<endl;  break;
    case '-' :cout<<B<<endl;  break;
    case '/' :cout<<D<<endl;  break;
    case '%' :cout<<C<<endl;  break;
    default  :cout<<"wrong!"<<endl;  break;
   }
}