I encourage you to first, read the sections, and then try review
problems in the book. When that is complete, you should try these
problems and understand their solutions. This set of questions is not a
complete list (and some of the questions are half-formed, so there is
no guarantee that any of these will appear on the quizzes).

------------------------------------------------------------------
Chapter 13 (section 13.8 only)
------------------------------------------------------------------

1. What is the friend keyword used for in C++?
2. What is overloaded input?
3. What is overloaded output?
4. Demonstrate how to overload input for . . . 
5. Demonstrate how to overload output for . . .
6. How does one use cout with a user defined type?
7. How does one use cin with a user defined type?
8. What is the output of the following code . . . 

------------------------------------------------------------------
True/False
------------------------------------------------------------------
1. friend is necessary for mutator functions
2. friend is not necessary for mutator functions
3. friend is necessary for accessor functions
4. friend is not necessary for accessor functions
5. friend is necessary for overloaded input
6. friend is not necessary for overloaded input
7. friend is necessary for overloaded output
8. friend is not necessary for overloaded input