fread

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 non-locking counterparts, see unlocked_stdio(3).

RETURN VALUE
       fread and fwrite return the number of items successfully read or writ-
       ten  (i.e., not the number of characters).  If an error occurs, or the
       end-of-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
       The functions fread and fwrite conform  to  ANSI	 X3.159-1989  (‘‘ANSI
       C’’).

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



BSD MANPAGE			  1996-05-17			     FREAD(3)