What is friend functions, C/C++ Programming

Assignment Help:

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 can be accessed only by member functions of the class. This restricted access not only hides the execution details of the methods and the data structure, it also saves the data from any possible misuse, accidental or otherwise. Though, the concept of data encapsulation sometimes takes information hiding too far. There are situations where a rigid and controlled access leads to inconvenience and hardships.

For example, consider a case where a function is needed to operate on object of two different classes. This function cannot be made a member of both the classes. What can be done is that a function can be explained outside both the classes and made to operate on both. That is, a function not belonging to either, but able to access both. Such a function is known as a friend function. In other words, a friend function is a non-member function, which has access to a class's private members. It is like allowing access to one's personal belongings to a friend.

 


Related Discussions:- What is friend functions

PEBBLE MERCHANT, C CODE FOR PEBBLE MERCHANTS PROBLEM

C CODE FOR PEBBLE MERCHANTS PROBLEM

Program for dynamic 2d memory, Requirements: 1.  This assignment as well...

Requirements: 1.  This assignment as well as other assignments in this class must be finished on Windows operating system. 2.  Zip your program and submit the zip file on ANG

New customer, #questionhow can i add new customer and alot him a new unique...

#questionhow can i add new customer and alot him a new unique id ..

Minimum shelf, At a shop of marbles, packs of marbles are prepared. Packets...

At a shop of marbles, packs of marbles are prepared. Packets are named A, B, C, D, E …….. All packets are kept in a VERTICAL SHELF in random order. Any numbers of packets with thes

Luminous and jewels, Byteland county is very famous for luminous jewels. Lu...

Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various luminous jewels of particular colour. Nec

Compass bearing, write a c program that converts compass bearings into dire...

write a c program that converts compass bearings into direction

Make a connection to fifa ultimate team 14 using c++ or c#, I need to creat...

I need to create a connection to FIFA Ultimate Team 14, I want to utilize C++ specifically for the reason that that is the language I have the most experience in. There are a co

Blackjack Game help, I can''t figure out how to stop the programming from h...

I can''t figure out how to stop the programming from hitting for the player even when they type in stand.

What are header files and what are their uses, What are header files? What ...

What are header files? What are their uses? - Header files are also known as library files. - They carry two significant things: definitions and prototypes of functions bein

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