How do I achieve polymorphism in C++ using virtual functions?

Asked by Last Modified  

2 Answers

Learn C++ Language

Follow 1
Answer

Please enter your answer

Pankaj Girish Adawadkar

Step 1: Define the base class containing a virtual method. class Arithmetic { public: virtual void calc(); }; Step 2: Create the subclass. Also write the implementation of the virtual method. class Addition { public: void calc() { // logic of addition ...
read more
Step 1: Define the base class containing a virtual method. class Arithmetic { public: virtual void calc(); }; Step 2: Create the subclass. Also write the implementation of the virtual method. class Addition { public: void calc() { // logic of addition } }; 3) Creating pointer variable:, void main() { Arithmetic* obj1 = new Addition(); obj1-> calc(); ; read less
Comments
Dislike Bookmark

Experienced Computer trainer having worked in IT sector for 20 years.

The main use of virtual function is to achieve Runtime Polymorphism. Runtime polymorphism can be achieved only through a pointer (or reference) of base class type. Also, a base class pointer can point to the objects of base class as well as to the objects of derived class.
Comments
Dislike Bookmark

Related Questions

Is there any person who can teach me C++ without Money Fees?
Good question :) Free training is available on various sites online. But, if you would want to learn from an expert directly, there's a very slim chance that you might find some one who will teach for...
Kishan
What is the best IDE for C and C++ development?
If you're a student then Turbo C++ is best for C and C++ program + inbuilt C/C++ Graphics Function If you're a professional or working then Netbeans for C/C++ or Code:: Blocks is Best.
Balakrishnasingh
Is it possible to write big safe programs in C++?
yes. C++ is generally used to write system software. For example windows operating system are writeen in C++. Most of the operating system, device driver and antivirus programs are written by using C++.
Sapna
0 0
View Comments6
What is the use of virtual keyword in inheritance?
use of virtual keyword in inheritance-------> Multiple inheritance in C++ is a powerful, but tricky tool, that often leads to problems if not used carefully. This article will teach you how to use virtual...
Shabbir
I would like to be part of UrbanPro as a tutor
Contact urbanpro.com.
Sreepa

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Do (pre & post)Increment and decrement operators behave differently when printed in the same and different line in C++?
Before I explain anything,I would like you to run the following program. void main() {int j =10; cout<<“j before increment =“<<j; cout<<“++j =“<< ++j; cout<<“...

Blazing Minds Learning Centre

0 0
View Comments0
Why Indexing Should Start From Zero In Array ?
Why numbering should start at zero? To denote the subsequence of natural numbers 2, 3, ..., 12 without the pernicious three dots, fourconventions are open to usa) 2 ≤ i < 13b) 1 < i ≤ 12c)...

Sunil Yadav

0 0
View Comments0
Importance Of Function Prototype In C
Function prototype tells compiler about number of parameters function takes, data-types of parameters and return type of function. By using this information, compiler cross checks function parameters and...

Sunil Yadav

1 0
View Comments0
Memory Layout in C++ vis-a-vis Polymorphism and Padding bits.
I know there is no need for the knowledge of memory layout for a normal day-to-day development of C++. However, when someone goes in the bit/byte level of C++, he needs to look for such discussion. To...

Somenath Mukhopadhyay

0 0
View Comments0
Swapping Two Numbers
Q. Swap two numbers using the following function. Complete the function. You won't be allowed to use a temporary variable to swap the two numbers. void swap ( ... ) { /* Swap code goes here */ } ...

Pooja R.

0 0
View Comments0

Recommended Articles

About C++ Programming Language

Introduction C++ is an excellent programming language and many of the applications are written in C++ language. It has generic, object-oriented & imperative programming features, and also provides facilities for low-level memory manipulation. Successor of C language, it is an OOP (object oriented programming) language...

Read full article >

Why Should you Become an IT Consultant

Information technology consultancy or Information technology consulting is a specialized field in which one can set their focus on providing advisory services to business firms on finding ways to use innovations in information technology to further their business and meet the objectives of the business. Not only does...

Read full article >

Make a Career in Mobile Application Programming

Almost all of us, inside the pocket, bag or on the table have a mobile phone, out of which 90% of us have a smartphone. The technology is advancing rapidly. When it comes to mobile phones, people today want much more than just making phone calls and playing games on the go. People now want instant access to all their business...

Read full article >

Make a Career as a BPO Professional

Business Process outsourcing (BPO) services can be considered as a kind of outsourcing which involves subletting of specific functions associated with any business to a third party service provider. BPO is usually administered as a cost-saving procedure for functions which an organization needs but does not rely upon to...

Read full article >

Find C++ Language Classes near you
C++ Language Classes in Bangalore
C++ Language Classes in Delhi
C++ Language Classes in Pune
C++ Language Classes in Mumbai
C++ Language Classes in Hyderabad
C++ Language Classes in Chennai
C++ Language Classes in Kolkata
C++ Language Classes in Jaipur
C++ Language Classes in Ghaziabad
C++ Language Classes in Noida

Looking for C++ Language Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you