diff options
Diffstat (limited to 'lib/yesno.c')
-rw-r--r-- | lib/yesno.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/yesno.c b/lib/yesno.c new file mode 100644 index 000000000..a705da732 --- /dev/null +++ b/lib/yesno.c @@ -0,0 +1,37 @@ +/* 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; +} |