Runtime polymorphism In C++ | Runtime polymorphism In C++ Example | Runtime polymorphism In C++ In Hindi

 

Runtime Polymorphism In C++

This type of polymorphism is achieved by Function Overriding.      

    ·       Function Overriding      

Fig: Runtime Polymorphism In C++

   

      1.   Function overriding 

 Function overriding on the other hand occurs when a derived class has a definition for one of the member functions of the base class. That base function is said to be overridden.

Program:

#include<iostream.h>

#include<conio.h>

class base

{

public:

          virtual void print ()

          {

cout<< "print base class" <<endl;

 }

void show ()

          {

 cout<< "show base class" <<endl;

 }

};

class derived:public base

{

public:

          void print ()       

{

 cout<< "print derived class" <<endl;

}

void show ()

          {

 cout<< "show derived class" <<endl;

 }

};  

void main()

{

          base *bptr;

          derived d;

          bptr = &d;

          bptr->print();  

          bptr->show();

getch();

}

Output:

Print derived class

Show base class