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explain friend functions

explain friend functions

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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  1. explain friend functions.
Expert Solution
Friend Function:
  • A friend function is defined as the function which is outside of the class that has granted permission to access the private and protected members of the class.
  • When we declare a function as a friend function the private and protected data members of the class can be accessed using the function.
  • for declaring the friend function one keyword is used that is a friend.
  • for access to the data, the friend function is declared in the body of the class.
  • The friend keyword is used only when we declare the function but in the function, the definition does not use any keyword like a friend.

 

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