Followup from Exam and Exceptions

Followup from Exam - Quiz

Followup from Lab - Compare your answers to your colleagues.
Develop a test plan.  Given that the input to the Expression Evaluator is a String, and given the definitioins of valid strings, design test cases that you can use to test your program.    Bonus of 5 points to anyone who submits in 5 tries or less (excepting some of the glitches of submit or the instructor).

Introduction to Exceptions - Gaddis chapter 12.