[Coco] [Color Computer] Update: Inkey for Microware C...

[Gene Heskett]

On Monday 08 December 2003 22:50, Mannequin* wrote:
>Here is the code that Mike sent:
>
>char inkey() {
>  char ch;
>
>  fflush(stdout);   /* needed if you're using bufrered I/O anywhere
> in the prog */
>  if( getstat(1, 0))      /* 2nd arg must be the I/O
>                             channel (0==stdin) */
>    return(0);
>  read(0, 1, &ch);        /* caution-- check argument order here */
>  return(ch);
>}
>
>I did see one thing that Mike pointed out in his comments. He needed
> to rearrange the arguments in the read function:
>
>read (0, &ch, 1);
>
>Anyway, I've implemented that code in to a small test file:
>
>/* myconio.c: Test of inkey () function. */
>
>#include <stdio.h>   /* For fflush () and other I/O functions.*/
>#include <sgstat.h>  /* For the getstat () function. */
>
>int inkey (void)     /* Yeah, I changed it from a char to int
> return. */ {
>  char ch;
>
>  fflush (stdout);
>  if (getstat (1, 0))
>    return 0;
>  read (0, &ch, 1);
>  return ch;
>}
>
>int main (void)
>{
>  char ch = '\0';
>
>  while ((ch = inkey ()) != 35)   /* 35 = '#'; My fake-EOF
> character. */ {
>    if (ch != 0)                                           /* Or
> NULL */ printf ("ch = %c = %i\n", ch, ch);
>  }
>
>  return 0;
>}
>
>So, when I compile and run this, it always prints the character I
> typed in before it hits the printf () function. Here's an example:
>
>OS9: myconio
>fch = f = 102
>#
>OS9:
>
>So how do I go about defeating this?

I believe you'll need to setup a setstt call to shut off the console 
echoing, or do the equ in your program of calling 'tmode -echo' 
before the fflush, and another to 'tmode echo' immediately after the 
printf statement do when its done you have a cli that echos what you 
type again.  Don't carve that in stone though, its been a while since 
I've coded in C.  I *think* thats "system 'tmode -echo'" without the 
dbl quotes IIRC, somebody rescue me here, puleaze!  I know it can be 
done, I've done it, but that was years back up the log.


>Thanks in advance!
>- Mannequin*
>
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-- 
Cheers, Gene
AMD K6-III at 500mhz 320M
Athlon1600XP at 1400mhz  512M
99.22% setiathome rank, not too shabby for a WV hillbilly
Yahoo.com attornies please note, additions to this message
by Gene Heskett are:
Copyright 2003 by Maurice Eugene Heskett, all rights reserved.