Iteration in C

Hi there /prog/.

I know Python, and I'm learning C. Both langs have for loops. Python's nicely iterates over a collection of unknown length. C's usually has you specify the length of the collection at compile time, but what if the length is unknown?

My best newbie guess: you terminate the collection with NULL, or you write an iteration function that returns some end-of-collection value when it's done.

>>44
I started this sub-discussion, and I have never used any language other than "array" or "buffer". If you want to restrict your solutions purely to integers for no particular reason then that makes it all the worse. Nice try though.