List a directory in a C program on Unix machines

[CAO YUSONG]

In article <159 at smds.UUCP> rh at smds.UUCP (Richard Harter) writes:
>In article <1990Aug10.213953.25619 at cubmol.bio.columbia.edu>, ping at cubmol.bio.columbia.edu (Shiping Zhang) writes:
>> In article <1990Aug10.154506.846 at caen.engin.umich.edu> cys at caen.engin.umich.edu writes:
>> >  I am currently writing a C program on Unix machines. What I want to
>> >do is to store the file names in a directory into a character array.
>> >So I can do something to those files. I want to use Unix system calls
>> >to handle it. Could anyone help me out with that? 
>
>> I think opendir(), readdir() etc. can handle this problems. Check
>> your man pages.
>
>But be warned.  There are some portability pitfalls so the routine to
>fetch the file names should be encapsulated.  The major variants that
>I can think of offhand are:
>
>(a)	BSD	Uses <sys/dir.h> 
>(b)	SYS V	Uses <dirent.h>
>(c)	SYS V	Older versions of SYS V may not have these routines.
>		You can write your own.  THe directory is a file 
>		containing an array of structures which can be read.
>		The format is in the manual.
>(d)	VMS	Write your own.  There are C callable VMS library
>		routines for extracting the needed information.
>(e)	Primos	Has a routine called lsdir which returns just what
>		you want.
>
>
>-- 
>Richard Harter, Software Maintenance and Development Systems, Inc.
>Net address: jjmhome!smds!rh Phone: 508-369-7398 
>US Mail: SMDS Inc., PO Box 555, Concord MA 01742
>This sentence no verb.  This sentence short.  This signature done.

Thanks everyone who replied my message. You guys are really fantastic!