“__isoc99_sscanf” Ответ

__isoc99_sscanf

   man scanf:

       These  functions  return the number of input items successfully matched
   and assigned, which can be fewer than provided for, or even zero in the
   event of an early matching failure.
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__isoc99_sscanf

/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
   The GNU C Library 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
   Lesser General Public License for more details.
   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */
#include <stdarg.h>
#include <libio/strfile.h>
/* Read formatted input from S, according to the format string FORMAT.  */
int
__isoc99_sscanf (const char *s, const char *format, ...)
{
  va_list arg;
  int done;
  _IO_strfile sf;
  FILE *f = _IO_strfile_read (&sf, s);
  va_start (arg, format);
  done = __vfscanf_internal (f, format, arg, SCANF_ISOC99_A);
  va_end (arg);
  return done;
}
libc_hidden_def (__isoc99_sscanf)
Solly

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