Tent Class
Overriding Methods
This class shows you how to override methods from a parent class.
Your tent will have 1 room, 2 walls, and will NOT have a washer.
Since a tent doesn't really have much value, it does not make sense to use the PropertyValue() method defined in Residence. Instead, you can override PropertyValue() by using the same method stub present in Residence, but changing the logic inside the method. So, you will make a method in Tent called PropertyValue() that returns a double, but all it does inside the method is return 0.
Also, a tent has no windows, so you should also override the NumWindows() method to return 0.