Question

Which objects can call the const functions?

(a) Only const objects

(b) Only non-const objects

(c) Both const and non-const objects

(d) Neither const not non-const objects

This question was posed to me in examination.

The origin of the question is Constant Member Functions topic in portion Member Functions & its Types of Object Oriented Programming

Answer 1

Correct choice is (c) Both const and non-const objects

For explanation: All the objects of a class can call const functions for its use. Const objects can call the const functions to since those values are already constant. And the non- const objects can call the const functions to keep their values constant.