I don't know sorry I only use that on Unix system. =/ I didn't try to port this to non-Unix systems.

Why is this not portable to non-Unix systems? For example, instead of your custom str, which uses Unix syscalls, try using the standard prinf.

Oh ok, thanks' sorry i didn't understand that. Thanks to you :)! Now it's ok for the identation, it was my fault, i copy/paste my bitbucket :P

I don't know C but I'm sure someone else would love to help you out. I was just saying something because the indentation in the code looked like it was off: ie:

int		find(char *name, char *file)

instead of just

int find(char *name, char *file)

so I wanted to make sure that the site didn't have a bug. Thanks for posting :)

I want to optimise this and make it better ^^' that's all, if you can help me to do that =).

What happened with the formatting? Was it a copy paste issue or did Codewars somehow mess it up?