Date: Fri, 28 Apr 2000 18:07:41 -0400 (EDT)
Message-Id: <200004282207.SAA26925@indy.delorie.com>
From: Eli Zaretskii <eliz AT delorie DOT com>
To: hank_heng <hank_heng AT hotmail DOT com>
CC: djgpp AT delorie DOT com
In-reply-to: <8ebgps$5qd$1@nnrp1.deja.com> (message from hank_heng on Fri, 28
	Apr 2000 08:06:26 GMT)
Subject: Re: File Pointer.
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> From: hank_heng <hank_heng AT hotmail DOT com>
> Newsgroups: comp.os.msdos.djgpp
> Date: Fri, 28 Apr 2000 08:06:26 GMT
> 
>   If I have a File Pointer, how do I know I that file pointer is still
> pointing to a stream or it is already close ?

In general, you can't.

You can try something like the snippet below, but it's not 100%
reliable and not 100% portable (it is also UNTESTED):

	FILE *fp;
	...
	int still_open = lseek(filen(fp), 0L, SEEK_CUR) != -1;