An observation just for fun: if you really want to, you can solve the "average of integers, terminated by 99999" problem without needing any of { goto, break, d

An observation just for fun: if you really want to, you can solve the "average of integers, terminated by 99999" problem without needing any of { goto, break, duplicated code }. Here's one way: int sum = -99999; int count = -1; int last = 0; do { scanf("%d", &last); // scanf is kinda evil but is what article uses sum += last; count += 1; } while (last != 99999); Or you can initialize sum and count to 0 and correct them after the loop instead of pre-correcting before as the code above does. This results in code that is a little longer, very marginally slower, and somewhat easier to read. (There is still a little bit of duplication there: the magic number 99999 appears twice. For this reason I would actually use break, unless required not to like some of the students in the experiment.)