C program to find area of rectangle, C/C++ Programming

Assignment Help:

Aim: To implement a program to find area of rectangle, surface area of box and volume of box using virtual functions.

Code:                      

class rect

{

            double l,b;

            public:

                        virtual void getdata();

                        virtual void area();

};

void rect::getdata()

{

            cout<<"Enter the length and breadth of rectangle:\n";

            cin>>l>>b;

}

void rect::area()

{

            cout<<"Area of rectangle = "<

}

class box:public rect

{

            double l,b,h;

            public:

                        void getdata();

                        void area();

                        void volume();

};

void box::getdata()

{

            cout<<"\nEnter the length, breadth and height of the box:\n";

            cin>>l>>b>>h;

}

void box::area()

{

            cout<<"Surface area of the box = "<<2*(l*b+b*h+l*h)<<" sq. units\n";

}

void box::volume()

{

            cout<<"Volume of the box = "<

}

void main()

{

            rect r,*ptr;

            box b;

            clrscr();

            ptr=&r;

            ptr->getdata();

            ptr->area();

            ptr=&b;

            ptr->getdata();

            ptr->area();

            ((box *)ptr)->volume();

            getch();

}

 

Output:

Enter the length and breadth of rectangle:

10

15

Area of rectangle = 150 sq. units

 

Enter the length, breadth and height of the box:

5

12

6

Surface area of the box = 324 sq. units

Volume of the box = 360 cu. units


Related Discussions:- C program to find area of rectangle

Explalin concept of derivations in c++, derivations 1. Regardless of the...

derivations 1. Regardless of the type of derivation, private members are inherited by the derived class, but cannot be accessed by the new member function of the derived class,

What is the issue which auto_ptr objects address?, A: If you employ auto_pt...

A: If you employ auto_ptr objects you would not need to be concerned along with heap objects not being deleted even if the exception is thrown.

Rules of function, Rules of function: Inline function created witho...

Rules of function: Inline function created without prototype it reduces the memory and it is used only for small function. Inline function cannot have recursion, static var

However shouldn''t i always use a printon() method instead , Q: however sho...

Q: however shouldn't I always use a printOn() method instead of a friend function? A: No. The usual cause people wish to always use a printOn() method instead of  a friend fu

What is friend functions, Friend Functions One of the major features of...

Friend Functions One of the major features of OOP is information hiding. A class encapsulates data and methods to operate on that data in a single unit. The data from the class

Code, how to write c++ for function f(x)= 2x^3 -x^2 +10

how to write c++ for function f(x)= 2x^3 -x^2 +10

Database, write a c++ program to update employee records

write a c++ program to update employee records

Explanation of break statement, Problem 1. Explain Break and continue s...

Problem 1. Explain Break and continue statements in C++. Explanation of Break statement Explanation of Continue statement 2. Explain concepts of constructors and

Difference between mutex and binary semaphore, Semaphore is used to synchro...

Semaphore is used to synchronize processes. whereas mutex is used to give synchronization among threads running in the similar process.

Create a program for decision structure , Create the following program or p...

Create the following program or propose one of your own. The program must include at least one of each of the following. Decision structure Repetitive structure fu

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd