Sounds right Hypno. However, it looks to me like a compare and shuffle won't work since he needs to do things like averages and so on... Sounds like the instructor is trying to get them comfortable with arrays (and maybe linked lists?) and some basic algorithms and function calls.

1) a. Create arrays for each of the sin, cos, etc
b. Create a for loop from 0 to 360 and for each step calculate the sin, cos, etc, and stick it into the correct array
c. Print out the appropriate values as needed.

2) What you have already is a good basic outline if you know exactly how many calls you will have. Otherwise you have to do one of two things, either ask them for the number first, then loop through asking for more, or have them enter something like 0 or --1 to indicate they are done. You should stick these into either an array or a linked list though, since you won't know how many calls will be entered when you are writing your program.
I would use a linked list here, so you can do an insertion sort as the user enters the call lengths. Once they indicate they are done, create a loop to calculate things like averages, etc.


Good luck. Let us know if this isn't clear enough!