Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!crdgw1!uunet!munnari.oz.au!bunyip.cc.uq.oz.au!marlin.jcu.edu.au!cpawn
From: cpawn@marlin.jcu.edu.au (Andrew W Nicholson)
Newsgroups: comp.lang.pascal
Subject: Check to see if file exists ????????
Message-ID: <1991May31.181401.7164@marlin.jcu.edu.au>
Date: 31 May 91 18:14:01 GMT
Sender: cpawn@marlin.jcu.edu.au (Andrew W Nicholson)
Followup-To: cpawn@marlin.jcu.edu.au
Organization: James Cook University of North Queensland
Lines: 30


What I need to know is how to check if a filename input by the user
exists.

I have the following types and variables:-

type
	string40 = array[1..40] of char;
var
	in_file_name : string40;
	data_file : file of char;

This is pascal on a Ultrix DEC station, not TP or any other fancy versions.

After I prompt the user for the in_file_name and read it in, how do I
check to see if the in_file_name given really exists?

I need this because if the user enters an invalid in_file_name, the
program bombs when I try to access it, which makes sense of course.

Any ideas greatly accepted.

			Andrew.


-- 
    _--_|\,-----From Townsville in sunny North Queensland      *
   /      \                                                  *   *
   \_.--._/     Andrew Nicholson  cpawn@marlin.jcu.edu.au       '
         v                                                     *