Unbuffered I/O using MicroSoft C 3.0

[S. John Banner]

In article <645 at uw-warp.UUCP> tom at uw-warp.UUCP (Tom May) writes:
>In article <1867 at sunybcs.UUCP>, ugwayne at sunybcs (Wayne Nelligan) writes:

>So, here is the promised routine which invokes MS-DOS to get a
>character from the keyboard (not stdin) without echoing it.  It also
>does some things which are obvious from looking at the code.
>
>#include <dos.h>
>int
>grokchar() {
>    union REGS regs;
>
>    regs.h.ah = 7;      /* get char no echo */
>    intdos (&regs, &regs);
>    return (regs.h.al == 26 ? EOF : regs.h.al == '\r' ? '\n' : regs.h.al);
>}

you can actually do the same thing without resorting to DOS in mscv4.0,
and I understand it works in earlyer versions as well (I got the trick
from a freind of mine using v2.something).

grokchar()
{
while (!kbhit())
   ;
return getc();
}

I am not totally sure that I have the right funtion names here, but I
know they are pretty close (you might try fgetc if getc doesn't work),
and I may have the wrong name for kbhit, but the names should be pretty
obvious.

                      S. John Banner

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ccsjb at uvvm
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