Question

What is the syntax of copy constructor?

(a) classname (classname &obj){ /*constructor definition*/ }

(b) classname (cont classname obj){ /*constructor definition*/ }

(c) classname (cont classname &obj){ /*constructor definition*/ }

(d) classname (cont &obj){ /*constructor definition*/ }

This question was posed to me during an interview.

This is a very interesting question from Copy Constructor in portion Constructors and Destructors of Object Oriented Programming

Answer 1

The correct choice is (c) classname (cont classname &obj){ /*constructor definition*/ }

To explain: The syntax must contain the class name first, followed by the classname as type and &object within parenthesis. Then comes the constructor body. The definition can be given as per requirements.