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 location
       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
       location 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 3.44 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU
								    2012-03-30								  FREAD(3)