I finished a lab early once and decided that the most efficient use of my time was to make a program that simulated the Cat proximity XKCD, it being one of my favorites. The program prompts the user for a distance to a cat in feet, and then give the adjusted intelligence and statement inanity level (x% of normal intelligence, statement is y% inane) as well as plotting the point of both on a graph based on the one in the comic. There is also a built in limit for both extremely close and far distances.
This Instructable will show step-by-step what the program does as well as giving the code in full with my original comments. It also gives the output given by the computer for some example inputs.
Programming experience is not necessary to run the program, since I give it to you. It will help understand what's happening, however. The best source for clearing up confusion concerning what a function does or how to use it is the MATLAB website. So grab a cat and get started!