The importance of showing ALL of the code in C

Legal in the sense that the compiler cannot spit it out. It does not, however, have an implementation independent meaning (i.e. different things can happen on different platforms). While A[10] has a clear meaning (the next int in memory after A[9]) that doesn't mean that: (a) you have any idea which (if any) of your other variables may be trodden on (in particular there is no way you can know where N will be in memory in relationship to A[]) or (b) that you cannot seg fault under some circumstances on some machines (as a simple example, consider the case of an embedded system where A[9] happens to land at the exact top of your accessible memory). Antonio