Write a C++ program that describes function Overriding?

Answer:

Let see a program, in which base and child class have the same function Display that follows function overriding rule.

// Function Overriding
#include<iostream>
using namespace std;
//Base class
class BaseClass
{
public:
    virtual void Display()
    {
        cout << "In Base class\n";
    }
};
//child class
class DerivedClass : public BaseClass
{
public:
    // Overriding method - new working of
    // base class's display method
    void Display()
    {
        cout << "In Child class\n";
    }
};
int main()
{
    DerivedClass dr;
    BaseClass &bs = dr;
    bs.Display();
}

Output:

In Child class