Simple Inheritance and overriding of…

[Prince Kumar]

#include <iostream>

// Base class A

/*************************************** A Class*****************************************************/

class A

{

public:A()

{

std::cout<<"Constructor of A called\n";

}

public: void f1()

{

std::cout<<"F1 function of A called\n";

}

// Member function f2 of A

public: void f2()

{

std::cout<<"F2 function of A called\n";

}

// Member function f3 of A

public: void f3()

{

std::cout<<"F3 function of A called\n";

}

};

// Derived class B inheriting from A

/***************************************** B Class ***********************************************/

class B: public A

{

public:

// Constructor of B, calls the constructor of A

B():A()

{

std::cout<<"Constructor of B called\n";

}

// Overriding function f1 from A

public: void f1()

{

std::cout<<"F1 function of B called\n";

A::f1(); // Explicitly calling f1 of A

}

// Overriding function f2 from A

public: void f2()

{

std::cout<<"F2 function of B called\n";

}

};

/**************************************** C Class***************************************************/

class C:public B

{

public:C():B()

{

std::cout<<"Constructor of C called\n\n";

}

public:void f1()

{

std::cout<<"F1 function of C called\n";

B::f1();

}

public:void f3()

{

std::cout<<"F3 function of C called\n";

}

};

/********************************************** Main Functin ***************************************/

int main()

{

// Creating an object of class B

C c;

// Calling functions f1, f2, and f3

c.f1(); // Calls overridden function in B, then calls A's f1

c.f2(); // Calls overridden function in B

c.f3(); // Calls inherited function from A

return 0;

}