(if time) Discuss the Ch. 6 demo programs

• Demo Program #1 - the use of void functions (functions that do not return a value). One void function has a parameter and the other does not.
• Demo Program #2 - the use of a function that does return a value but that does not have any parameters
• Demo Program #3 - the use of functions and a global variable (which is dangerous and usually inappropriate.)
• Demo Program #4 - the use of two functions