If we have a full selection of accessor and mutator functions, why would we have friend functions?
A) You should not have them
B) More efficient access to the private data members.
C) The friend function must call the accessor or mutator functions anyway.
D) none of the above

Question

Quizplus · Accepted Answer

Friend functions provide a mechanism for external functions or classes to access an object's private or protected data directly, without using accessors or mutators. This can lead to more efficient code, especially in situations where calling multiple accessors or mutators would be less efficient or when direct manipulation of the object's state is necessary from outside the class.

If We Have a Full Selection of Accessor and Mutator