Design and implement a class called MonetaryCoin that is
derived from the Coin class presented in Chapter 5. Store an
integer in the MonetaryCoin that represents its value and add
a method that returns its value. Create a main driver class
to instantiate and compute the sum of several MonetaryCoin
objects. Demonstrate that a monetary coin inherits its parent’s
ability to be flipped.

This is what is needed to be changed.

1) The main driver was to be a class of its own and not part of MonetaryCoin.

2) The output should list each coin's face and value on the same line.
3) The MonetaryCoin class should have its own constructor, gets and sets, and toString methods.