Calculator

#include<iostream>
using namespace std;

int main()
{
   char op;
   float a,b;
   cout<<"Enter Operator either + or - or * or / :"<<endl;
   cin>>op;
   
   cout<<"Enter Two operands :"<<endl;
   cin>>a>>b;
   
   switch(op)
      { 
         case '+':
             cout<<a + b;
             break;
            
         case '-':
             cout<<a - b;
             break;
             
          case '*':
             cout<<a * b;
             break;
             
          case '/':
             cout<<a / b;
             break;
             
          default:
             //If the operator is other than + ,- ,* or / error message is shown
             cout<<"ERROR ! operator is not correct";
             break;
        }
        return 0;
   
  }