Dining philosophers
Five philosphers contemplating life and eating noodles is a classical problem. If they are not that hungry things will work without problem but if they all eat more than they dream things will be more problematic.
When you have done the assignment you should take a look at the following assignment that will explain what is going on in some more detail. Do solve the philosophers assignment first and then read this text, you learn more if you first do it wrong, and then realize that it is wrong, rather then doing it right from the beginning by following a given trail.