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.

>>16
There are a few reasons. The big one is that free(buf) will not go over well. Another is that it wants a lot of casting in practice.

All trumped by the fact that it's never necessary. I don't use any languages that depend on a worse solution.