6. (B) Show the use of virtual function

6. (B) Show the use of virtual function

	#include<iostream.h> #include<conio.h>
	class base
	{
	public:
	virtual void show()
	{
	cout<<"\n Base class show:";
	}
	void display()
	{
	cout<<"\n Base class display:";
	}
	};
	class drive:public base
	{
	public:
	void display()
	{
	cout<<"\n Drive class display:";
	}
	void show()
	{
	cout<<"\n Drive class show:";
	}
	};
	void main()
	{
	clrscr();
	base obj1;
	base *p;
	cout<<"\n\t p points to base:\n";
	p=&obj1;
	p->display();
	p->show();
	cout<<"\n\n\t p points to derive:\n";
	drive obj2;
	p=&obj2;
	p->display();
	p->show();
	getch();
	}