Exercise 22: What Do You Know So Far?
There won't be any code in this exercise, so there's no What You Should See or Study Drills either. In fact, this exercise is like one giant Study Drills. I'm going to have you do a review of what you have learned so far.
First, go back through every exercise you have done so far and write down every word and symbol (another name for "character") that you have used. Make sure your list of symbols is complete.