Access Functions and Utility Functions

Not all member functions need be made public to serve as part of the interface of the class.

• Access functions
• public
  • Read/display data
  • Predicate functions
  • Check conditions
  • Utility functions (helper functions)
• private
  • Support operation of public member functions
  • Not intended for direct client use

The program of Figs. 1.12-1.15 demonstarates the notion of a utility function (also called helper function).

Figure 1.13: SalesPerson class member-function definitions (part 1 of 2)

Figure 1.14: SalesPerson class member-function definitions (part 2 of 2)

Figure 1.15: Utility function demonstration