How to check if an File/Directory Exists?

FROM : Aya Koshigaya
DATE : Tue Jan 01 22:53:48 2008

Hi,

I need to check if an File or Directory exists, but without the use of 
Cocoa or ObjC.. I need it in plain C.. is there a way to do this? :)

And, I need a way to create a directory.. also in plain C.

Does anyone have an idea?

Aya

PS: I need it in plain C, cause I have to use GCC 3.3.. and it seems 
like GCC3.3 can't compile ObjC.. I got many errors in the Cocoa.h :/