getting input from keyboard
Michael Stefanik
mike at bria.AIX
Tue Jan 1 05:22:16 AEST 1991
In article <DAVIDD.90Dec30195511 at wolf.cs.washington.edu>, davidd at wolf.cs.washington.edu (David Doll) writes:
> Hello,
> Inside of some "C" code, I want to be able to get a single char(or
> number) from the user without them having to type a carriage return.
I'm assuming that you have the termio stuff, but here is a little ditty
to get a single character from the keyboard:
#include <stdio.h>
#include <termio.h>
int getch()
{
struct termio old, new;
char c;
int ret;
ioctl(0,TCGETA,&old);
memcpy(&new,&old,sizeof(struct termio));
new.c_lflag &= ~ICANON;
new.c_lflag &= ~ECHO;
new.c_cc[VMIN] = 1;
new.c_cc[VTIME] = 0;
ioctl(0,TCSETA,&new);
if ( read(0,&c,1) != 1 )
ret = EOF;
else
ret = (int)c;
ioctl(0,TCSETA,&old);
return(ret);
}
-----------------------------------------------------------------------------
Michael Stefanik, Systems Engineer (JOAT), Briareus Corporation
UUCP: ...!uunet!bria!mike
"If it was hard to code, it should be harder to use!"
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