virtual_function.cpp

// Example program
#include <iostream>

using namespace std;

class Base {
    public:
        virtual void show() {
            cout << "Base Class" << endl;
        }
};

class Derived : public Base {
    public:
        void show() {
            cout << "Derived Class" << endl;
        }
};

int main(void) {
    Base *bp = new Derived;
    
    bp -> show();       // Run-Time Polymorphism
    
    return 0;
}