C++ Example code to understand the concept of Polymorphish using Virtual Function

polymorphism-virtual-function.cpp

#include<iostream>
using namespace std;

class Animal
{
	public:
		virtual void Sound()
		{
			//No code. . . 	
		}	
};
//-------------------------------------

class Cat : public Animal
{
	public:
		void Sound()
		{
			cout<<"Meow Meow";
		}
};

//-------------------------------------

class Dog : public Animal
{
	public:
		void Sound()
		{
			cout<<"bow bow";
		}
};

//-------------------------------------

int main()
{
	Cat PersianCat;
	Dog Lebra;
	Animal* Pet;
	
	string Choice;
	cout<<"Please tell me the Animal Name ";
	cin>>Choice;
	
	if(Choice == "Cat" || Choice == "cat" || Choice == "CAT")
	{
		Pet = &PersianCat;
		Pet->Sound();
	}
	else if(Choice == "Dog" || Choice == "dog" || Choice == "DOG")
	{
		Pet = &Lebra;
		Pet->Sound();
	}	
}

//Code by HammadMaqbool