#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 '/':{switch(c){case 0:cout<<"Divided by zero!"; return 0;} }cout<<a/c;break; default:cout<<"Invalid operator!"; } return 0; }