Why can two different enum enumeration-constants have the same integer value?

Question

I know that if I defined an enum weekday like this:

enum weekday {
    MON,
    TUE,
    WED,
    THU,
    FRI,
};

Then, MON would internally e

Answer 1

It's as philosophical (or not) as

#define ZILCH 0
#define NADA  0

There are many uses where it makes sense to have different names result in the same number.