Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!spool.mu.edu!uunet!mcsun!hp4nl!dri500!heinhuis
From: heinhuis@dri.nl (Gustaaf-Jan Heinhuis)
Newsgroups: comp.lang.c
Subject: Re: fscanf(stderr,"%d",&i); ?!?!?
Message-ID: <1010@dri500.dri.nl>
Date: 23 Apr 91 13:57:06 GMT
References: <1991Apr2.083400.5511@athena.mit.edu> <1991Apr23.075320.9473@en.ecn.purdue.edu>
Organization: DataCount Register Informatici, Wierden, The Netherlands
Lines: 45

In article <1991Apr23.075320.9473@en.ecn.purdue.edu> 
tenka@en.ecn.purdue.edu (Andy Tenka) writes:

>In desperation to get the input from keyboard, I used:
>
>	fscanf(stderr,"%d",&i);
>
>However, the fscanf does not wait for input from keyboard.
>It just reads 0 from stderr before I even type anything.
>I know I did something wrong here.  Could any of you gurus
>point out my mistakes

Ever tried to read from screen??????? 
Since when is stderr linked to a keyboard?????!!!!!!!!

The kernel links stdin to the keyboard (_iob[0]), stdout an stderr to the
screen (_iob[1] and _iob[2] resp.) *****before***** the program starts.
Redirecting results in the kernel linking stdin to the file instead of to
the keyboard.

>and also, could you show me a way to
>write a program that takes input from both redirected stdin
>and keyboard?  Many thanks in advance.

This is elementary (do hope I will not regret this remark, no flames)

You simply open a file for reading ( fopen(filename, "w") ). You have 
three options:
      1): supply filename as an argument to your program.
      2): let the user supply the filename ( scanf("%s", &name) )
      3): you always read from the same file, i.e. filename is a string
	  constant.

Hope this helps, Gustaaf-Jan.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++---===To all virgins, thanks for nothing.===---++++++++++++++
          
   ___              GJ Heinhuis student comp. sc. HIO Enschede (Holland)
  /  _)             Final Project at: DataCount, Wierden, Holland
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