INHERITANCE EXAMPLE2

TASK2:


 Complete the following tasks:
a. Create a base class named  Rectangle  that includes data members for the length
and width of a  Rectangle, as well as functions to as sign and display those values.
Derive a class named  Block  that contains an additional data member to store height,
and contains functions to assign and display the height. Write a main()function that
demonstrates the classes by instantiating and displaying the values for both a
Rectangle  and a  Block. Save the file as  RectangleAndBlock.cpp.
b. Add a member function to the Rectangle  class that computes the area of a
Rectangle  (length multiplied by width). Add a member function to  Block  that has the
same name, but overrides the computation  with a volume calculation (length by
width by height). Write a main() function that demonstrates the classes. Save the file
as RectangleAndBlock2.cpp.

CODE(A):

#include<iostream>

#include<conio.h>

using namespace std;

class rectangle

{

private:

            float length,width;

public:

            void getdata()

            {

             cout<<"Enter the value of length:";cin>>length;

             cout<<"Enter the value of width:";cin>>width;

            }

            void showdata()

            {

             cout<<"Length:"<<length<<endl;

             cout<<"Width:"<<width<<endl;

            }

};

class block:public rectangle

{

private:

            float height;

public:

            void getdata()

            {

             rectangle::getdata();

             cout<<"Enter value of height:";cin>>height;

            }

            void showdata()

            {

             rectangle::showdata();

             cout<<"Height:"<<height<<endl;

            }

};

int main()

{

  rectangle rec1;

  block bl1;

  cout<<"Enter data for rectangle "<<endl;

  rec1.getdata();

  cout<<"Enter dat for block"<<endl;

  bl1.getdata();

  cout<<"Entered data for rectangle is"<<endl;

  rec1.showdata();

  cout<<"Entered data for block is"<<endl;

  bl1.showdata();

  cout<<endl;

  getche();

  return 0;

}

OUTPUT:

Enter data for rectangle

Enter the value of length:75

Enter the value of width:38

Enter dat for block

Enter the value of length:92

Enter the value of width:83

Enter value of height:23

Entered data for rectangle is

Length:75

Width:38

Entered data for block is

Length:92

Width:83

Height:23

CODE(B):

#include<iostream>

#include<conio.h>

using namespace std;

float area1;

class rectangle

{

private:

            float length,width;

public:

            void getdata()

            {

             cout<<"Enter the value of length:";cin>>length;

             cout<<"Enter the value of width:";cin>>width;

            }

            void showdata()

            {

             cout<<"Length:"<<length<<endl;

             cout<<"Width:"<<width<<endl;

             cout<<"Area:";

             cout<<AreaAndVolume(length,width)<<endl;

             

            }

            int AreaAndVolume(float length2,float width2)

            {

             

           

              area1=length*width;

              return area1;

            }

};

class block:public rectangle

{

private:

            float height;

public:

            void getdata()

            {

             cout<<"Enter value of height:";cin>>height;

            }

            void showdata()

            {

             cout<<"Height:"<<height<<endl;

             cout<<"volume:";

             cout<<AreaAndVolume(height)<<endl;

            }

            int AreaAndVolume(float height)

            {

             float vol1;

             vol1=area1*height;

             return vol1;

            }

};

int main()

{

  rectangle rec1;

  block bl1;

  cout<<"Enter data for rectangle "<<endl;

  rec1.getdata();

  cout<<"Enter dat for block"<<endl;

  bl1.getdata();

  cout<<"Entered data for rectangle is"<<endl;

  rec1.showdata();

  cout<<"Entered data for block is"<<endl;

  bl1.showdata();

  cout<<endl;

  getche();

  return 0;

}

Output:

Enter data for rectangle

Enter the value of length:75

Enter the value of width:86

Enter dat for block

Enter value of height:758

Entered data for rectangle is

Length:75

Width:86

Area:6450

Entered data for block is

Height:758

volume:4889100