//  A2_9.cpp

#include <iostream>
using namespace std;

class A { 
  int x; 
public:
  A() { cout << "\n  A's address is " << this; }
};

class B { 
  double y; 
public:
  B() { cout << "\n  B's address is " << this; }
};

class C : public A, public B {  

public:
  void getBaseAdresses(A* &pA, B* &pB) {

    pA = static_cast<A*>(this);
    pB = static_cast<B*>(this);

////// old-style casts also work //////////////////////////
//
//  pA = (A*)this;
//  pB = (B*)this;
//
////// this also works ////////////////////////////////////
//
//  pA = &(dynamic_cast<A&>(*this));
//  pB = &(dynamic_cast<B&>(*this));
//
////// note that x and y are not accessible in C //////////
//
//  int *pX = &A::x;        // won't compile
//  double *pY = &B::y;     // won't compile
//
///////////////////////////////////////////////////////////

  }
};

void main() {

  C c;
  A* pA;
  B* pB;
  c.getBaseAdresses(pA,pB);
  cout << "\n  address of base A  is " << pA;
  cout << "\n  address of base B  is " << pB;
  cout << "\n  address of derived is " << &c;
  cout << "\n\n";
}