#include <iostream>
#include <typeinfo>

using namespace std;

class Base {};
class Derived : public Base {};

int main( ) {

   Base b, bb;
   Derived d;

   if (typeid(b) == typeid(d)) { // No
      cout << "b and d are of the same type.\n";
   }
   if (typeid(b) == typeid(bb)) { // Yes
      cout << "b and bb are of the same type.\n";
   }
   if (typeid(d) == typeid(Derived)) { // Yes
      cout << "d is of type Derived.\n";
   }
}
