Date: Tue, 08 Aug 1995 08:44:32 +0200 (MET DST)
From: Christoph Kukulies <kuku AT gilberto DOT physik DOT rwth-aachen DOT de>
Subject: Re: printf.help
To: brendan AT rdt DOT monash DOT edu DOT au (Brendan Simon)
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Reply-To: Christoph Kukulies <kuku AT gilberto DOT physik DOT rwth-aachen DOT de>

> 
> 
> Hi there,
> 
> I have a printf problem (or more to the point a problem that occurs when
> printing text to the console) which seems to have popped up out of the
> blue.  It looks to me like a buffering issue.
> 
> I have some code :-
> 
> 	printf("Enter S for simulate or R for real > ");
>>>>        fflush(stdout);   <<<<
> 	key = getkey();
> 	switch(key)
> 	{
> 		....
> 	}

or use setbuf() (I believe) to set stdout to unbuffered.

> 
> 
> It only outputs the printf string after I press one of the appropriate keys.
> I looked at the FAQ and it suggested cprintf, cputs or using the fflush(stdout)
> to force the buffer's contents to the screen.  These methods haven't work.
> 
> Am I misdiagnosing the problem or doing something wrong.  I can't recall 
> having this problem with printf before.  I even tried putting a \n at the end
> of the string hoping it would flush the buffer.
> 
> Hope someone can help with this hopefully simple problem.  Does V2 handle
> buffered output any differently to V1.  Should I be using cprintf instead of
> printf as a rule.  What about portability...
> 
> Regards
> Brendan Simon
> brendan AT rdt DOT monash DOT edu DOT au
> 
> 
> 
> 
> 
> 

--Chris Christoph P. U. Kukulies kuku AT gil DOT physik DOT rwth-aachen DOT de
FreeBSD blues.physik.rwth-aachen.de 2.2-CURRENT FreeBSD 2.2-CURRENT #0:
Tue Jul 18 14:49:19 MET DST 1995     kuku AT blues DOT physik DOT rwth-aachen DOT de:
/usr/src/sys/compile/BLUESGUS  i386