程式設計範例(整數加減乘除)

#include
using namespace std;
void main(){
cout<<"Please input a equation:"; int x,y; char c;cin>>x>>c>>y;
int ans;
switch(c){default: cout<<"不對"; return;
break;case '+': ans=x+y;
break;case '-': ans=x-y;
break;case '*': ans=x*y;
break;case '/': ans=x/y;
}
cout<}