(if time) Discuss the following Ch.8 demo programs:

• Ch. 8 Demo #1 - to illustrate the use of string variables. We will use string variables rather than character arrays as the textbook teaches.
• Ch. 8 Demo #2 - to illustrate a potential error with the use of string variables.
• Ch. 8 Demo #3 - to demonstrate opening a file for input and reading from the file.
• Ch. 8 Demo #4 - to illustrate how to detect the end of a file while reading that file
• Ch. 8 Demo #5 - to illustrate how to open a file for output and how to write to that file.
• Ch. 8 Demo #6 - to illustrate how to append to a file