(if time) Review Ch. 3 demo programs:

• Ch. 3 Demo #1 - Declaring and using constants
• Ch. 3 Demo #2 - Correct the errors in this program
• Ch. 3 Demo #3 - Implicit and explicit conversion (promotion & typecasting)
• Ch. 3 Demo #4 - Int and char datatypes and typecasting
• Ch. 3 Demo #5 - rounding to a decimal place with my "macho method" of rounding
• Ch. 3 Demo #6 - using setprecision to display rounded values, using setw, etc.