what is Virtual Functions? explain with example

Virtual Functions-

• Virtual function is member function of a class.
• Virtual function is declared with the keyword virtual.
• Virtual function takes a different functionality in the derived class.
• It is used to implement run time polymorphism.

For example:-

#include<iostream.h>

#include<conio.h>

Class pixeles

{

public:

virtual void disp()

{

cout<<“PIXELES CLASSES FOR BCA & MCA” ;

}

};

Class india : public pixeles

{

public:

void disp()

{

cout<<“\n A SUCCESS KEY”;

}

};

class success : public pixeles

{

public:

void disp()

{

cout<<“\n www.pixelesindia.com”;

}

};

void main()

{

clrscr();

pixeles op;