Question

Which among the following helps to create a temporary instance?

(a) Implicit call to a default constructor

(b) Explicit call to a copy constructor

(c) Implicit call to a parameterized constructor

(d) Explicit call to a constructor

The question was posed to me in an interview.

My enquiry is from Constructors in section Constructors and Destructors of Object Oriented Programming

Answer 1

Right answer is (d) Explicit call to a constructor

Explanation: Explicit call to a constructor can let you create a temporary instance. This is because the temporary instances doesn’t have any name. Those are deleted from memory as soon as their reference is removed.