#include<iostream>

using namespace std;

class  AA{

public :

   AA(){cout<<"ConstructorofAA.\n";fun( );}

   virtual void fun( ){cout<<"AA::fun( )is called.\n";}

};

class BB:public AA{

public :

BB( ){cout<<"Constructor of BB.\n"; fun( );}

void fun( ){cout<<"BB::fun( )is called.\n";}

};

int  main( ){BB  d; return 0;}