How to get the max value in ENUM

[Lorey]

Hi!

I have an enum type like:

enum callnumbers
{ one = 1
two = 2
three = 3 }

but this enum list has a tendency to be updated like adding

enum callnumbers
{ one = 1
two = 2
three = 3
four = 4}

my question is how to dynamically gets the maximum value in the enum list.

 

[Salem]

Typically, I include a maximum

enum {
  one,
  two,
  three,
  max // insert additions before this
};

But if you go in for actually numbering the enums yourself, and put in some perverse ordering like this, then you're on your own.

enum {
  three = 3,
  two = 2,
  one = 1,
  max // (will be 2 in this case)
};

--

 

[IonelBurtan]

There is no dedicated support for this in C++.

One tricky thing would be to make an array of them and then get the size by casting the sizeof array to the sizeof the first element in the palce you need. Then if the numbers are consecuve, this may help, if nto the approach is useless.

HTH,

s-)

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