Using simple, college level c++ programming

Design a class called NumDays. The classs purpose is to store a value that represents a number of work hours and convert it to a number of days. For example, 8 hours would be converted to 1 day, 12 hours would be converted to 1.5 days, and 18 hours would be converted to 2.25 days. The class should have a constructor that accepts a number of hours, as well as member functions for storing and retrieving the hours and days. The class should also have the following overloaded operators:

+ Addition operator. When two NumDays objects are added together, the overloaded + operator should return the sum of the two objects hours members.

- Subtraction operator. When one NumDays object is subtracted from another, the overloaded operator should return the difference of the two objectshours members.

++ Prex and postx increment operators. These operators should increment the number of hours stored in the object. When incremented, the number of days should be automatically recalculated.

-- Prex and postx decrement operators. These operators should decrement the number of hours stored in the object. When decremented, the number of days should be automatically recalculated.