#include <iostream.h>


class A 
 {

    protected:

        int a,b;

 
    public:

        A(){
         a=10;
         b=5;
        }


      virtual void base_display() {

            cout << "In Super :";
            cout << a <<endl<< b <<endl ;
       }
       
};

class B;

typedef void (B::*Display) (int);

class B:public A
{

    public :

      Display bala; 

        B() {
	    cout<<"i'm in child \n";
	//	bala = display;
        }

        void display(int r) {
         A::base_display() ;
         cout << "I'm in child's display" << a;
        }

};



int main() {


    B  b;
	b.bala=&(b.display);
	b.bala(5);

//    b.display(32);
}