//  B1_10.cpp

#include <iostream>
using namespace std;

class B { 
public: 
  virtual~B() { cout << "\n  ~B()"; } 
  virtual void mf() { cout << "\n oooo B::mf()"; } 
};
class D : public B { 
public: 
  virtual ~D() { cout << "\n  ~D()"; }
  virtual void mf() { cout << "jjjjiiiiii\n  D::mf()"; } 
};

void main() {

  {
    D da[2];
    B *pB = &da[0]; pB->mf();
    D *pD = &da[1]; pD->mf();
  }
  cout << "\njjkjjjjj\n";
}