Question

Which among the following describes a destructor?

(a) A special function that is called to free the resources, acquired by the object

(b) A special function that is called to delete the class

(c) A special function that is called anytime to delete an object

(d) A special function that is called to delete all the objects of a class

I have been asked this question during an interview.

The above asked question is from Destructors topic in section Constructors and Destructors of Object Oriented Programming

Answer 1

Right answer is (a) A special function that is called to free the resources, acquired by the object

Easiest explanation - It is used to free the resources that the object might had used in its lifespan. The destructors are called implicitly whenever an object’s life ends.