C++ Polymorphism

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The word 'Polymorphism' originated from the Greek word. Poly means "Many" and morphism means "Form". Polymorphism means Many Forms.


Single action is performed by different ways i.e., known as the polymorphism.


There are 4 pillars in oops. They are an inheritance, polymorphism, abstraction, and encapsulation.

C++ polymorphism

Binding

The process of combining a member function with the object is known as Binding.

Early Binding

The function overloading and operator overloading are the compile-time polymorphism which is known as the Static binding or Early binding. By default, C++ follows early binding.

Late Binding

The method or function overriding is the run-time polymorphism which is known as the Late binding or Dynamic binding.

Example:

#include <iostream>    
using namespace std;  

class A // base class
{  
	public:  
        void show(){
        	cout << "Base class Function" << endl; 
        }
};  
class B: public A
{  
    public:  
        void show(){
        	cout << "Derived class Function" << endl; 
        }
};       
int main() {  
   A a;
   A *a1;
   a1=new B;
   a.show(); // Early Binding or Static binding
   a1->show(); // Late Binding or Dynamic Binding
   return 0;
}
Run ›
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