A copy constructor must receive its argument by reference because:
A) Otherwise the constructor will only make a copy of a pointer to an object.
B) Otherwise infinite recursion occurs.
C) The copy of the argument passed by value has function scope.
D) The pointer needs to know the address of the original data, not a temporary copy of it.

Question

Quizplus · Accepted Answer

When a copy constructor is called with an argument passed by value, it tries to make a copy of the argument by calling the copy constructor again, leading to infinite recursion. Passing by reference avoids this issue.

A Copy Constructor Must Receive Its Argument by Reference Because