Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
FREAD(3)		   Linux Programmer's Manual		      FREAD(3)

NAME
       fread, fwrite - binary stream input/output

SYNOPSIS
       #include	<stdio.h>

       size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream);

       size_t fwrite(const void	*ptr, size_t size, size_t nmemb,
		     FILE *stream);

DESCRIPTION
       The  function  fread()  reads  nmemb  elements of data, each size bytes
       long, from the stream pointed to	by stream, storing them	at  the	 loca-
       tion given by ptr.

       The  function  fwrite()	writes nmemb elements of data, each size bytes
       long, to	the stream pointed to by stream, obtaining them	from the loca-
       tion given by ptr.

       For nonlocking counterparts, see	unlocked_stdio(3).

RETURN VALUE
       On  success,  fread()  and  fwrite() return the number of items read or
       written.	 This number equals the	number of bytes	transferred only  when
       size  is	1.  If an error	occurs,	or the end of the file is reached, the
       return value is a short item count (or zero).

       fread() does not	distinguish between end-of-file	and error, and callers
       must use	feof(3)	and ferror(3) to determine which occurred.

CONFORMING TO
       C89, POSIX.1-2001.

SEE ALSO
       read(2),	write(2), feof(3), ferror(3), unlocked_stdio(3)

COLOPHON
       This  page  is  part of release 3.74 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest	  version     of     this    page,    can    be	   found    at
       http://www.kernel.org/doc/man-pages/.

GNU				  2012-03-30			      FREAD(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | CONFORMING TO | SEE ALSO | COLOPHON

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=fwrite&sektion=3&manpath=Debian+8.1.0>

home | help