How do I declare a nested enum?

Question

I want to declare a nested enum like:

\\\\pseudocode
public enum Animal
{
  dog = 0,
  cat = 1
}

private enum dog
{
   bulldog = 0,
   greyhound = 1,
   hus         


        

Answer 1

This solution returns int, not type. But I am using it like this:

public static class Animals
{
    public static class Vertebrates
    {
        public static class Mammals
        {
            public enum Dogs
            {
                BullDog = 0,
                Greyhound = 1
            }
            public enum Cats
            {
                persian = 0,
                Greyhound = 1
            }
        }

        public static class Birds
        {
            public enum FirstType
            {
                FirstType0 = 0,
                FirstType1 = 1
            }
            public enum SecondType
            {
                SecondType0 = 0,
                SecondType1 = 1
            }
        }
    }
}

Usage:

int i = (int)Animals.Vertebrates.Mammals.Dogs.BullDog; 
int j = (int)Animals.Vertebrates.Birds.FirstType.FirstType0;