CS202   3- ‹#›
Constructors in Hierarchies
nThe initialization list causes the base class constructor to be invoked with the correct arguments!
nThe order of the arguments for the base class is very important. They must be listed in the same order as the base class constructor expects.
n If we had not included the base class constructor in the initialization list of the derived class, then the default base class constructor would be invoked.
nIf no default base class constructor exists, then a compile error results.