219: Create a C++ program that demonstrates function overriding and dynamic polymorphism in single inheritance. Define a base class "Shape" with a virtual function "displayInfo." Derive classes "Circle" and "Rectangle" from "Shape" and override the "displayInfo" function to provide specific information about each shape.

 

// Create a C++ program that demonstrates function overriding and dynamic polymorphism in single inheritance.

// Define a base class "Shape" with a virtual function "displayInfo." Derive classes "Circle" and "Rectangle"

// from "Shape" and override the "displayInfo" function to provide specific information about each shape.

#include <iostream>

using namespace std;

class Shape

{

public:

    virtual void displayInfo() { cout << "A closed geometrical figure is known as shape\n"; }

};

class Circle : protected Shape

{

public:

    void displayInfo() override

    {

        cout << "A circle is a closed two-dimensional figure in which the set of all "

             << "the points in the plane is equidistant from a given point called center.\n";

    }

};

class Rectangle : protected Shape

{

public:

    void displayInfo() override

    {

        cout << "a rectangle is a quadrilateral with four right angles. "

             << "It can also be defined as: an equiangular quadrilateral\n";

    }

};

int main()

{

    Circle c1;

    Rectangle r1;

    c1.displayInfo();

    cout << endl;

    r1.displayInfo();

    return 0;

}