Is it possible to determine the number of elements

Question

Is it possible to determine the cardinality of a c++ enum class:

enum class Example { A, B, C, D, E };

I tried to use sizeof, however, it returns the size of an enum element.

sizeof(Example); // Returns 4 (on my architecture)

Is there a standard way to get the cardinality (5 in my example) ?

Answer 1

You can also consider static_cast<int>(Example::E) + 1 which eliminates the extra element.