Turbo C++ 3.0 bugs
Sean 'Captain Napalm' Conner
spc at conman.org
Wed Dec 14 14:31:29 CST 2005
It was thus said that the Great Chuck Guzis once stated:
>
> On 12/14/2005 at 2:45 PM 9000 VAX wrote:
>
> >
> >No, The order is not important. But I have a clue now. It might be
> >that Watcom C treats printf() function differently from other
> >functions. I think the compiler tends to delay the execution of
> >printf(), given that variables to be printed have not yet updated by
> >the program. But this trick (to execute printf() with other printf()'s
> >for speed?) does not work well if the program needs to read hardware
> >inside of printf(). I actually observed the "delayed printf()"
> >phenomenon and its effect here is my guess.
>
> Well, printf() does write to a buffered stream, doesn't it, so it will be
> delayed unless you also issue a fflush(stdout) immediately thereafter.
Or you call setvbuf(). You can turn off buffering on stdout by:
setvbuf(stdout,NULL,_IONBF,0);
But I'll stop here before turning this into a C support list 8-)
-spc (Who ended up writing my own IO routines in C anyway ... )
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