stdio-common/isoc99_scanf.c

   1 /* Copyright (C) 1991, 1995, 1996, 1997, 2002, 2004, 2006, 2007
   2    Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <stdarg.h>
  21 #include <stdio.h>
  22 #include <libioP.h>
  23
  24
  25 /* Read formatted input from stdin according to the format string FORMAT.  */
  26 /* VARARGS1 */
  27 int
  28 __isoc99_scanf (const char *format, ...)
  29 {
  30   va_list arg;
  31   int done;
  32
  33   _IO_acquire_lock_clear_flags2 (stdin);
  34   stdin->_flags2 |= _IO_FLAGS2_SCANF_STD;
  35
  36   va_start (arg, format);
  37   done = INTUSE(_IO_vfscanf) (stdin, format, arg, NULL);
  38   va_end (arg);
  39
  40   _IO_release_lock (stdin);
  41   return done;
  42 }