More About Enumeration Types
Consider the following declaration:
   enum Animals {RODENT, CAT, DOG, BIRD, REPTILE, HORSE,
BOVINE, SHEEP};
and the following variable declarations:
    Animals inPatient;
   Animals outPatient;
Acceptable assignemnts are
   inPatient = DOG;
   outPatient = inPatient;
   someInt = DOG;
   inPatient = Animals(inPatient + 1);