CIS 250 - enumerations

declaring an enum: enum enumname { identifierList };
example: enum suit { DIAMONDS, CLUBS, HEARTS, SPADES };
identifiers have to follow standard identifier naming rules
identifiers have int values internally
you are guaranteed that identifiers increase in value as you go to the right
you can assign a specific identifier in the list a value
if unspecified, enum numbering starts at 0 and increases by 1 for each identifier

declaring a variable: enumName variableName;
example: suit cardSuit;
example of assigning a value: cardSuit = HEARTS;
no standard arithmetic operations are allowed on enumerations
you can increment an enum doing the following: cardSuit = static_cast<suit>(cardSuit + 1)
you can decrement an enum doing the following: cardSuit = static_cast<suit>(cardSuit - 1)
relational operators work fine with enumeration variables/values
for loops work well with enumerations, but remember that the increment and decrement is done a little differently
enumeration values can be passed to and returned from functions
enumeration values can be used as switch statement values
you can specify a list of variable names at the end of an enum declaration
you can omit the enumeration name, but then it becomes hard to use in your code
value names used in one enum are internally unique from value names used in another enum, even if the value names appear the same to us

create a namespace: namespace namespaceName { members }
using a namespace member: namespaceName::namespaceMember
namespace members can include variables, constants, and functions
to make all members of a namespace available: using namespace namespaceName;
to make a single member of a namespace available: using namespaceName::memberName;