An abstract data type named Date

This abstract data type named Date (Listing 2) has month, day, and year data members.

An overloaded operator function suggests that it supports the addition of an integer number of days to the date encapsulated in an object of the class.

The class could be expanded to support:

• Addition and subtraction of dates
• Comparison of dates using overloaded relational operators, etc.

Could also be expanded to support behavior peculiar to the necessary date operations in the application for which it will be used.