Number of elements in an enum

Question

In C, is there a nice way to track the number of elements in an enum? I've seen

enum blah {     FIRST,     SECOND,     THIRD,     LAST }; 

But this only works if the items are sequential and start at zero.

Answer 1

If you don't assign your enums you can do somethings like this:

enum MyType {   Type1,   Type2,   Type3,   NumberOfTypes } 

NumberOfTypes will evaluate to 3 which is the number of real types.

Answer 2

I don't believe there is. But what would you do with such a number if they are not sequential, and you don't already have a list of them somewhere? And if they are sequential but start at a different number, you could always do:

enum blah {     FIRST = 128,     SECOND,     THIRD,     END }; const int blah_count = END - FIRST;