[Mono-list] enum examples from TiC# don't compile with mcs

[jpo]

Hi list,
the following example code from TiC# does not compile with mcs:

using System;

class EnumTest {
    enum Coin: short {
        Penny = 1,
        Nickel = 5,
        Dime   = 10,
        Quarter = 25,
        Dollar = 100
    }

    public static void Main ()
    {
        short change = (short)(Coin.Penny + Coin.Nickel);
        Console.WriteLine (change);
    }
}

Question: is this a bug in mcs or a bug in the book? What does csc do?

Thanks in adance
  Joerg