#include<iostream> using namespace std; int main(){ int a,c; char b; cin>>a>>b>>c; switch(b){ case '+':cout<<a+c;break; case '-':cout<<a-c;break; case '*':cout<<a*c;break; case '/':if(c==0) cout<<"Divided by zero!"; else cout<<a/c;break; default:cout<<"Invalid operator!";break; } return 0; }