Topic Review Questions
Portfolio Review 3
<put your name here>
<put the date here>

1. Why do we use function declarations? Why not just define all the functions
   above main?
   

2. Why would a programmer use pass by value rather than pass by reference?

3. Describe a situation in which you cannot use pass by reference.


4. Explain the implementation difference between structs and classes in C++.
   I'm asking in terms of how the C++ language is defined, now differences
   in how you use them.


5. Describe a specific situation in which a programmer would reasonably
   choose a struct over a class in a program. Now describe a situation
   in which a class would be more appropriate.