Tutorial Prep for week 10

1. Read section 22.1 from the text.
2. Complete exercises 22.1 and 22.3 from page 578. You will learn the most and consequently find A7 easier if you type your solutions into the computer and compile, debug and test them. However, since it is the week of test 2, we will accept hand-written solutions that look like serious attempts to solve these two problems.