Virtual Pointer

Question

What is virtual pointer? Hi, ALL, Today I had an telephone interview and got a question: \"What is virtual pointer?\" I stumbled on this one, so after it was finished, I tried G

Answer 1

There is no such thing as a "virtual pointer."

There are a few things the interviewer might have meant:

• A pointer to a polymorphic class
• A pointer to the vtable of a polymorphic class (credit @Maxim)
• A pointer within the vtable of a polymorphic class
• A smart pointer object with an overridden operator->
• A pointer to a virtual member function (credit @ Matthieu M)

But as far as "virtual pointer" is concerned, there's no such thing.