Extending an enum?

Question

Say I create an enum but eventually someone wants to add items to that enum, what does one do? ex:

// blah.hpp

enum PizzaDressing {
    DRESSING_OLIVES = 0,
    DRESSING_CHEESE = 1
};

and in my FunkyPizza class, there might be pepper toppings.

So how could I add peppers without obviously modifying the original enum?

Thanks.

Answer 1

You can't dynamically modify an enum, because it only defines a new type resolved at compile time. They are mnemonics for the programmer, at compilation they are translated to numbers.

That said, you can use any number not used by the original enum to represent whatever you want:

PizzaDressing a;
a = (PizzaDressing)5;