Question

Which of the following describes a friend class?

(a) Friend class can access all the private members of the class, of which it is a friend

(b) Friend class can only access protected members of the class, of which it is a friend

(c) Friend class don’t have any implementation

(d) Friend class can’t access any data member of another class but can use it’s methods

I got this question during an online interview.

I'm obligated to ask this question of Classes in portion OOPs Concept & Features of Object Oriented Programming

Answer 1

Right answer is (a) Friend class can access all the private members of the class, of which it is a friend

The explanation: A friend class can access all the private members of another class, of which it is a friend. It is a special class provided to use when you need to reuse the data of a class but don’t want that class to have those special functions.