Enumeration syntax

Can someone please explain to me which part is what in this:

enum bb { cc } dd;

I understand that enum bb is the name of the enumeration and that { cc } is its enumerator, but I have no clue what dd is.

>Solution :

enum bb
{
  cc
} dd;

1. bb – enum tag.
2. cc – enumerator constant. As it is first and it does not have an expicity defined value it will be zero (0);
3. dd – variable of type enum bb

It can be written as:

enum bb
{
  cc
};

enum bb dd;