| This declares a class Point and defines an object apoint. You can think of a class definition as a structure definition with functions (or ``methods''). Additionally, you
| can specify the access rights in more detail. For example, _x and _y are private, because elements of classes are private as default. Consequently, we explicitly
| must ``switch'' the access rights to declare the following to be public. We do that by using the keyword public followed by a colon: Every element following this
| keyword are now accessible from outside of the class.