From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Help! Check for input!
Date: Sun, 3 Oct 1999 13:08:59 +0200
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On Sat, 2 Oct 1999, Bas Hamstra wrote:

> Sorry if I am too impatience.

Yes, you are.  Please allow a couple of days before posting again,
since news propagation delays are sometimes significant.

> How can I check if there is input when my stdin is redirected?

What exactly do you mean by ``if there is input''?

If you need to know whether the file to which stdin is redirected
(even a pipe is a file in a DOS program) is empty or not, then you can
use library function `filelength', like this:

    int any_data_in_pipe = filelength (fileno (stdin)) > 0;