freebsd-dev/gnu/usr.bin/cvs/lib/yesno.c

38 lines
1.1 KiB
C
Raw Normal View History

1993-06-18 05:46:17 +00:00
/* yesno.c -- read a yes/no response from stdin
Copyright (C) 1990 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdio.h>
/* Read one line from standard input
and return nonzero if that line begins with y or Y,
otherwise return 0. */
int
yesno ()
{
int c;
int rv;
fflush (stderr);
c = getchar ();
rv = (c == 'y') || (c == 'Y');
while (c != EOF && c != '\n')
c = getchar ();
return rv;
}