Issues with Cheaters

There are a couple of main things that I would do if I saw a friend of mine cheating on something.  The first thing that I would do is report said friend.  I would tell an adult authority about it, then talk to the friend.  I would do this because 1.  The friend would realize that cheating didn't get him or her the points, and 2.  I could probably talk some sense into the cheating friend and get him or her to actually try to do the assignment right.