FREAD(D)            Linux Programmer's Manual            FREAD(D)



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(o).

RETURN VALUE
       fread  and  fwrite return the number of items successfully
       read or written (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(f) and ferror(r) to determine
       which occurred.

CONFORMING TO
       The functions fread and fwrite conform to ANSI X3.159-1989
       (``ANSI C'').

SEE ALSO
       read(d), write(e), feof(f), ferror(r), unlocked_stdio(o)



BSD MANPAGE                 1996-05-17                   FREAD(D)