Returned network mail

[Postmaster]

This message was automatically generated.

Your mail message could not be delivered at Dickinson College in Carlisle,
Pennsylvania because the user address was not known at our site.

Addresses at Dickinson College are of the following format:

        username at DICKINSN       e.g., POSTMASTER at DICKINSN
                                  or  ALLAN_J at DICKINSN
                                  or  WOLTER at DICKINSN

Usernames are typically the first 8 letters of the person's last name,
frequently with the first initial added, and occasionally with an
underscore.  As a result, it would be difficult to guess someone's username.
If you do not know the address of someone at Dickinson, please send a
message to POSTMASTER at DICKINSN asking for help.

----------------------------------------------------------------------
The following diagnostic is the reason for the return:

        %BNET-W-NOSUCHRCVR, receiver LEYON_C cannot be located

Returned mail follows:
----------------------
Received: From PSUVM(MAILER) by DICKINSN with Jnet id 3155
          for LEYON_C at DICKINSN; Sat, 21 Oct 89 02:17 EDT
Received: by PSUVM (Mailer R2.03B) id 7546; Sat, 21 Oct 89 02:19:50 EDT
Date:         Sat, 21 Oct 89 01:19:14 CDT
Reply-To:     Unix-Wizards at BRL.ARPA
Sender:       Unix-Wizards Mailing List <UNIX-WIZ at NDSUVM1>
From:         wong at OMCP.OMRON.CO.JP
Subject:      C on Directory
X-To:         unix-wiz%ndsuvm1.BITNET at cunyvm.cuny.edu
To:           Chris Leyon <LEYON_C at DICKINSN.BITNET>

I am porting a C program from BSD to System V.  It seems that the following
functions:

        opendir
        closedir
        readdir

are not available in the System V library.

Is that any way of resolving this?  Suggestions appreciated.
Thanx very much.

Marvin Wong
Omron Management Centre