##################################### Discussion 1
REVIEW: Pointer syntax, reference, CArrays
#1, 11, 2, 7-9

##################################### Discussion 2
REVIEW: pointers and pointer arithmetics
3-6, 10, 13, 12

#13 is a fun exercise for practicing CArrays. 
It's a simplified version of Game of Life.
I would plan for at least 30 minutes to do that exercise. 
