Since my discussion of the Project 1 code in class today was not very clear, I've updated the explanation on this week's assignment. I hope it's now more helpful. Post your questions here on the forum. 

Links to the relevant files are included in the write-up. The autograder gives the code full credit for the first four questions  (As with other code, you can run the autograder from a command line window or directly from an IDE.)