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Enumeration Types

• The user enumerates all of the possible values, which are symbolic constants

• Design Issue: Should a symbolic constant be allowed to be in more than one type definition?

• Examples:
  • Pascal--cannot reuse constants; they can be used for array subscripts, for variables, case selectors; no input or output; can be compared
  • Ada--constants can be reused (overloaded literals); can be used as in Pascal; input and output supported
  • C and C++--like Pascal, except they can be input and output as integers
  • Java does not include an enumeration type