Section 4:  If statement
                 SILVER,  Scan  Section  3.2,  Section  3.3,
                 Section 4.4
                 SCHAUM Chapter 5
                 POP, page 5-6, Chapter 7 and Appendix A

Unit 4.1 -- Translation of if-then-else

Unit 4.2 -- Multiple if/else's

Unit 4.3 -- If Example:  Max of Three Numbers

Unit 4.4 --- IF's with logical and's