#include <iostream>
using namespace std;
int a,b;
char op;
int main()
{
cout<<"a=";cin>>a;
cout<<"b=";cin>>b;
cout<<"operatia ";cin>>op;
switch (op)
{
case '+':
cout<<"suma="<<a+b;
break;
case '-':
cout<<"diferenta="<<a-b;
break;
case '*':
cout<<"produs="<<a*b;
break;
case '/':
cout<<"cat="<<a/b;
break;
default:
cout<<"semn operatie inexistenta"<<endl<<"repornire program"<<endl;
main();
}
}
