Create an Abstract Base class called shape. Derive class rectangle from the base class shape and a class cube from the rectangle class. Data members : Length, width for class rectangle Height for class cube Member function : Area(), print() for class rectangle Volume(), print() for class cube Make function print() as virtual and declare as a pure virtual function in the base class. Write a main program to compute the area of rectangle and volume of cube and display the result using base class pointer.

Create an Abstract Base class called shape. Derive class rectangle from the base class shape and a class cube from the rectangle class. Data members :  Length, width for class rectangle      Height for class cube  Member function :  Area(), print() for class rectangle     Volume(), print() for class cube Make function print() as virtual and declare as a pure virtual function in the base class. Write a main program to compute the area of rectangle and volume of cube and display the result using base class pointer.

#include<iostream.h>

#include<conio.h>

class shape

{

public:

    virtual void print()=0;

};

class rectangular:public shape

{

    private:

    float length,width,are;

public:

    void area(int i,int j)

    {

        length=i;

        width=j;

        area=length*width;

    }

void print()

    {

    cout<<"area is: "<<are<<"\n";

    }

};

class cube :public rectangular

{

    private:

        float hight,vol;

    public:

        void volume(float h)

    {

        hight=h;

         vol=hight*hight*hight;

    }

void print()

    {

        cout<<"the volume is :" <<vol;

    }

};

void main()

{

    clrscr();

    rectangular ob1;

    cube ob2;

    shape *sptr;

    sptr=&ob1;

    ob1.area(10,20);

    sptr->print();

    sptr=&ob2;

    ob2.volume(25.5);

    sptr->print();

    getch();

}