When to use an interface instead of an abstract class and vice versa?

Question

This may be a generic OOP question. I wanted to do a generic comparison between an interface and an abstract class on the basis of their usage.

When wou

Answer 1

The answers vary between languages. For example, in Java a class can implement (inherit from) multiple interfaces but only inherit from one abstract class. So interfaces give you more flexibility. But this is not true in C++.