CS21 Week5 In-Class Exercises for Thursday

If you have not alread done so, create a week5 subdirectory in your cs21 subdirectory, and from your week5 subdirectory, copy over my week5 files:
% cd                
% cd cs21
% mkdir week5
% cd week5
% pwd                
% cp ~newhall/public/cs21/week5/* .   
% ls
Makefile  Account.java  ATM.java