A: Use a member while you can and a friend when you need to.

Sometimes friends are better syntactically (e.g., in class Fred, friend functions let the Fred parameter to be second, whereas members require it to be first). Another good employ of friend functions are the binary infix arithmetic operators. For example :-  a Complex + a Complex must be defined as a friend instead of a member if you wish to allow a Float + a Complex as well (member functions don't let promotion of the left hand argument, as that would modify the class of the object it is the recipient of the member function invocation).

In other cases, select a member function on a friend function.

 

Posted Date: 3/20/2013 8:13:27 AM | Location : United States

Ask an Expert

Related Discussions:- Should my class declare a friend function or member function, Assignment Help, Ask Question on Should my class declare a friend function or member function, Get Answer, Expert's Help, Should my class declare a friend function or member function Discussions

Write discussion on Should my class declare a friend function or member function
Your posts are moderated

Write your message here..

Related Questions

Boardcoloring, how to fill the blank spaces in the board of 4*4 matrix with... how to fill the blank spaces in the board of 4*4 matrix with the minimum of 4 colors and the condition is the adjacent element should not have the same colour

Question, wap to calculatethe volume of cone,cylinderand sphere wap to calculatethe volume of cone,cylinderand sphere

Explain pure virtual functions, Pure Virtual Functions An abstract clas... Pure Virtual Functions An abstract class is one, which is used just for deriving some other classes. No object of this class is declared and used in the program. Likewise, ther

COMPILER DESIGN, Compiler Design - Limit In The Method Instructions Compiler Design - Limit In The Method Instructions

Define the char data type of c language, Define the Char Data Type of C Lan... Define the Char Data Type of C Language? The char defines characters. The char type will usually require only 1 byte of internal storage. Every char type has an equivalent inte

Need epos programmng and building, Project Description: I have a barber ... Project Description: I have a barber salon I am seeking someone to build me software for my PARTNER PT6910 touch screen till system. This software must add multiple staff login

Write a program for simulating jet-powered car acceleration, The absolute l... The absolute land-speed record of 763.035 MPH (Mach 1.02) was set in October 15 1997 by a jet-powered car called Thrust SSC in the Black Rock Desert of northern Nevada. The team th

Explain mixed mode expressions and implicit type conversions, Mixed Mode Ex... Mixed Mode Expressions and Implicit type Conversions A mixed mode expression is one in which the operands are not of the similar type. In this case, the operands are converted

Assignment, manupulates operator precidence manupulates operator precidence

#include , volume of a sphere volume of a sphere