Mail Archives: djgpp/1996/04/24/02:58:22
>
> On 23 Apr 1996, Gregory Fedor wrote:
>
> > I wrote some simple code that utilizes the gotoxy() and printf()
> > statements to place text on the screen, ala:
> >
> > while(!done)
> > {
> > gotoxy(column, line);
> > printf(" %... ", ...);
fflush(stdout);
or
put a setvbuf(stdout,NULL,_IONBF,0);
at the beginning of your file.
(not sure if if works under djgpp, though).
> >
> > // update column
> > // update line
> > }
> >
> > When I run this type of code nothing appears on the screen. I can see
> > the cursor jumping around, but nothing else. However, if I include a
> > '\n' in the printf statement, things display fine, *or* as soon as I
> > printf with a '\n' outside the loop, then **all** the text gets
> > displayed. It's almost as if it's being buffered, and isn't displayed
> > until a '\n' comes along.
> >
> > I'm stumped, anyone got a hint?
> >
> > Thanks
> > Gregory
> >
> > -------------------------------------------------------------------------------
> > Gregory A. Fedor ADF Inc. / NASA Lewis Research Center
> > Computer Engineer Microgravity Experiments
> > work: gfedor AT lerc DOT nasa DOT gov http://sven.lerc.nasa.gov/~gfedor (216)977-1247
> > personal: gfedor AT en DOT com http://www.en.com/users/gfedor
> >
>
> if i remember the bad old days of turbo c well enough, printf() which is
> a stream io command and gotoxy() which is a console io command don't mix,
> so the things you see are probably just a fluke. also, djgpp buffers
> stdio with a 4k buffer (i think) which adds more complexity. i believe
> what you should do is use curses (there's one for djgpp) and avoid the
> nonportability of the turbo c conio.h functions.
>
>
>
--Chris Christoph P. U. Kukulies kuku AT gil DOT physik DOT rwth-aachen DOT de
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