Final exam grading.

1) 30 points total
Globally for the problem:
  -3 if strcmp not used right, e.g. not checking == 0
  -5 if not using strcmp to compare strings (e.g., trying to use c++ ==)
  -1 no \n's used in printf
  -3 scanf used wrong
  -3 printf used wrong
1b:
  -4 if only have one if case correct
  -8 if don't have any if's
  -1 if the else is wrong because it's the else of only one of the if's
1c: 
  -5 if there is no loop
  -3 loop logic is wrong
  -5 if there is no fprintf (or equivalent)
  -3 if fprintf is used wrong
  

2) 15 points total, 5 points each for operators for +=, -=, <
2-3 points if got the method prototypes or the body right but not the other
-1 for minor errors, e.g. declaring the += operator to be const

3) 10 points total, 5 points per part
3a:
   -3 if the first line of output was okay but not the rest
3b: 
   -1 if one little mistake somewhere but the rest is right
   -2 skipped running f2, but the rest is right
   -3.5 if the first line is ok but not the rest