To:	djgpp AT sun DOT soe DOT clarkson DOT edu
Path:	mantis!not-for-mail
From:	olly AT mantis DOT co DOT uk (Olly Betts)
Newsgroups:	mail.djgpp
Subject:	Re: Question reagarding kbhit()
Date:	27 Feb 1995 16:32:53 -0000
Organization:	Mantis Consultants Ltd, Cambridge, UK
Lines:	35
References:	<9502270633 DOT AA23500 AT unlinfo DOT unl DOT edu>

In article <9502270633 DOT AA23500 AT unlinfo DOT unl DOT edu>,
Jon Keene <jkeene AT unlinfo DOT unl DOT edu> wrote:
>
>Could anyone tell me why it is that when I run the following
>program, it pauses for the keyboard hit _before_ doing any output?

Buffering.

>#include <stdio.h>
>#include <pc.h>
>#define BUFSIZE 1840  /* (80 * 23) */
>#define BLANK ' '
>
>main () {
>
>        int i;
>        int buf[BUFSIZE];
>
>        for ( i = 0; i < BUFSIZE; i++ )
>                buf[i] = BLANK;
>        buf[0] = 'a';
>        buf[BUFSIZE - 1] = 'z';
>        for ( i = 0; i < BUFSIZE; i++ )
>                printf("%c", buf[i]);

fflush(stdout); /* ensure buffers are written out */

>        while (!kbhit()) 
>                ;
>        return 0;
>}

Olly
-- 
Putting the "Ol" in technology.

- Raw text -