What is the main advantage of using a struct?

Describe at least one difference between a class and a struct.

How does class scope differ from block scope?

Describe two situations where it is OK to use friend functions.

How does a static data member differ from a non-static data member?

What is the difference between a static member function and a non-static member function?

What does it mean to declare a member function to be const?

Explain what would happen (and why) if a class T had a copy constructor with the following prototype?

 T::T(T other);