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FREAD
!!!FREAD
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
CONFORMING TO
SEE ALSO
----
!!NAME


fread, fwrite - binary stream input/output
!!SYNOPSIS


__#include __


__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''.
!!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(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


feof(3), ferror(3), read(2),
write(2)
----

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Last edited on Tuesday, June 4, 2002 12:24:20 am by "perry"

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