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

Largest clique, find largest clique present in graph

find largest clique present in graph

Program of libarary , #include #include using namespace std; class Book...

#include #include using namespace std; class Book { private: string title; int iD; int year_pub; string author; public: string getTitle(); int getId(); int getYear_Pub(); st

Add the two complex no.s given by user - c++ program, THIS PROGRAM IS TO AD...

THIS PROGRAM IS TO ADD THE TWO COMPLEX NO.S GIVEN BY THE USER  */ #include #include #include struct complex     {     int real;     int imag;     }; void main()  {  clrs

Program to write c++ program, program to write superposition of waves using...

program to write superposition of waves using class and objects

C#, 1. write a program named InputMethodDemo2 that eliminates the repetitiv...

1. write a program named InputMethodDemo2 that eliminates the repetitive code in the InputMethod() in the InputMethodDemo program. Rewrite the program so the InputMethod()contains

Custom scans and alerts think or swim, Custom Scans and Alerts Think or Swi...

Custom Scans and Alerts Think or Swim Project Description: I am seeking somebody to make me several Custom Scans and Alerts on Thinkorswim TOS Skills required are C++ Prog

Define the category of function - computer programming, Define the Category...

Define the Category of Function? A function, depending on whether arguments or parameters are present or not and whether a value returned or not, may belong to one of the foll

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