What does the compiler add to an empty class declaration?

Question

Suppose I write

class A { };

The compiler should provide (as needed)

• constructor
• destructor
• copy constructor
• = operator

Is that all the compiler provides? Are there any additions or deletions to this list?

Answer 1

This is completed. But there are two points that you should note:

• This is the copy = operator. Just as there is a copy constructor, there is a copy assignment operator.
• They are provided only for actual use.

Some explanation for 2:

struct A { private: A(); };
struct B : A { };

! "B", . ( ) ( , ), .

Answer 2

. , .

Answer 3

............ FOUR (), , .

Answer 4

:

(&) -