From: Weiqi Gao <weiqigao AT a DOT crl DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Problem with while-loop
Date: Sat, 04 Sep 1999 18:24:29 -0500
Organization: CRL Network Services
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

"Michael Nöthe" wrote:
> 
> I bought a book on learning C++ and along with it I got a copy of
> the GNU-C++ Compiler V. 2.7.2.1 for DOS from DJGPP.
> 
> In the book there was a sample program introducing encapsulated
> while-loops. A turning line (\|/-) should be shown on the screen.
> Now my problem is, the program doesn't seem to do anything !
> It compiles without any problems, but when I execute it, it shows
> nothing on the screen.
> After I finally use <CTRL+BREAK> to stop the programm, only the last
> charakter (e.g.: "\") is shown.

Your problem is not with the while loop.  It is with the way stdout
buffers its output.  To make your program work, you need to add a call
to
  fflush(stdout);
after each call to
  printf().


--
Weiqi Gao
weiqigao AT a DOT crl DOT com