function overriding in oop c 2b 2b

1#include<iostream>
2using namespace std;
3class Base
4{
5 public:
6 virtual void show() // virtual function
7 {
8  cout << "Base class";
9 }
10};
11class Derived:public Base
12{
13 public:
14 void show()
15 {
16  cout << "Derived Class";
17 }
18};
19
20int main()
21{
22 Base* b;       //Base class pointer
23 Derived d;     //Derived class object
24 b = &d;	// passing derived class address into base class pointer	
25 b->show();     //Late Binding Occurs
26}