Ask HN: Interesting (small) bits of C or C++ code

[malux85]

Hey everyone!

I'm looking for interesting bits of C or C++ code, smaller programs or functions. That I can read and learn from.

Not looking for hello world examples, more complex. An example of "Hey thats neat" would be donut.c (http://www.a1k0n.net/2011/07/20/donut-math.html)

Anybody else know of cool little gems like this?

[Someone]

If you want to learn C http://www.ioccc.org/ gives some nice examples.

If, on the other hand, you want to learn programming in C, do not use IOCCC sources as something to aim for :-). I haven't read any of it, but I suspect http://pdos.csail.mit.edu/6.828/2011/xv6.html will contain a wide complexity range of code.

[jfaucett]

coreutils is great if you're looking to buff up your c skills. http://www.gnu.org/software/coreutils/, just was looking over remove_suffix inside basename.c today actually.

[quadfour]

there is a reddit dedicated to small snippets of code called tinycode, but it does not focus in any particular language. Github maybe your best option.

[thomasbk]

A little-known operator in C++, the "goes to"-operator:

int i=4;

while(i --> 0) { cout << i; }

[dysoco]

Actually that's just decrementing and comparing to 0: while((i--) > 0)

[athesyn]

Github.

I've found cool/interesting functions (and even one-liners) by browsing around randomly.