If we assume that people are using this script to do work, but we want to improve upon it by adding new features, such as preventing a temperature less than absolute zero, we need to make it easy for our users to deal with the change.
This is where getter and setter methods come in. Normally, the direct access to temp would be hidden behind these methods, so that the only interface to interact with temp would require a method call, as shown in following screenshot:
Getter and setter methods
On line 90, we have rewritten the Fahrenheit class to include a getter and setter; these are the only ways to interact with the temp ...
