Lab 4: Queue Additions

Due February 26

This lab will be due later than usual, partly because of the President's Day holiday, and partly because I expect most people will be finishing project 1 instead of starting lab 4 this Monday. This lab does require a little more code than usual.
Starting with the compact queue demo from class (compact_queue.h), add the following features: You can start with the queue as it is while I'm writing this (Feb 10). But if you don't start this first, I will add a couple details to the queue on Tuesday. Please don't delay starting this assignment to wait for me to add onto the queue, since it's more than complete enough as-is.