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.

>>34
IHBT

>>33-34
pantsu

>>36
Back to the imageboards, please.

>>37
You must be new here.

>>38
For knowing proper use of sage doesn't require ``counter-bumping''? Fuck off.

>>39
[mail]sage[/mail]

>>39
Let me guess, you are one of >>33,34 and ashamed?

>>41
No, I am one of the people who feels the fact that you think there aren't enough programming-related threads on the front page doesn't merit shitposting, and one who disagrees with your definition of ``good thread''.