From: "Chris A. Triebel" <cat AT sun4 DOT iol DOT unh DOT edu>
Newsgroups: comp.programming,comp.os.msdos.djgpp
Subject: standard input and files
Date: Sun, 13 Oct 1996 13:00:03 -0400
Organization: University of New Hampshire  -  Durham, NH
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Here's the scenario I need.

I want to create an executable that will compile under DOS ( djgpp ) and 
most UNIX systems.  I want a functionality like more that can take input 
from standard input or from a file.  Like the more command ( on unix ) or 
grep or something.  I also want to use ifstreams to do the input.  

Question:
	Can I assume that standard input is always file descriptor 0, or 
can I get it's file descriptor from the standard libraries of C/C++.  
Is it part of the C++ standards that fd0 is always going to standard 
input, redirected or not?

TIA
cat