This will help you to develop programming skills. If that fails, send email to the list describing your problem. Generally, you should avoid including a program, but if you have a specific error message, you should include that. In other words, others shouldn't be able to simply copy off your program, make a few minor changes and submit it as their homework. Typically, I will notify you by email when a new assignment is linked in.
Prior permission is required for submission of late homework assignments.
You may work with others on your homework. However, typically, you will learn much more if the work is your own. I expect the homework which is turned in to show that it is substantially your own work. You can expect a homework assignment at least every two weeks. Homework submissions are expected to be organized and legible.