#include <iostream>
using namespace std ;

class A
{
	public:
	 int x1 ;
	 virtual void function1()
	  {
	  }
};

class B : public A
{
	public:
	 int x1B ;
};

class C : public A
{
	public:
	 int x1C ;

};


int main()
{

     B bObject ;
     bObject.x1B = 22 ;
     A* aObject = &bObject  ;
     //Not valid as aObject contains bObject as the
     //underlying object
     C* cObject = dynamic_cast<C*> (aObject) ;
     printf( "Pointer value: %p\n" , cObject ) ;
     if ( cObject != NULL )
       cout << cObject->x1C   << endl ;

     A& refAObject = bObject ;
     try
     {
       C& refCObject = dynamic_cast<C&> ( refAObject ) ;
     }
     catch (const bad_cast& e)
     {
	         cerr << "Exception: " << e.what() << endl;
     }

}