HW10 grading.

30 points total.

If you get the program completely correct up to and including
part __, you get __ points.

Part 3 (name and collaborators):	5 points
Part 4 (random number): 		5 points
Part 5 (get guess): 			10 points
Part 6 (tell if high/low): 		15 points
Part 7 (while loop until correc)t: 	25 points
Part 8 (how many guesses it took): 	28 points
Part 9 (let them quit early: 		30 points

Extra credit: at most 6 points.