Write the definition of a class, swimming Pool, to implement
Write the definition of a class, swimming Pool, to implement the proper-ties of a
swimming pool. Your class should have the instance variables to store the length (in
feet), width (in feet), depth (in feet), the rate (in gallons per minute) at which the
water is filling the pool, and the rate (in gallons per minute) at which the water is
draining from the pool. Add appropriate constructors to initialize the instance
variables. Also add member functions to do the following: determine the amount of
water needed to fill an empty or partially filled pool; determine the time needed to
completely or partially fill or empty the pool; add or drain water for a specific
amount of time.