67 lines
1.3 KiB
Groff
67 lines
1.3 KiB
Groff
|
.\" Copyright (c) 1980 Regents of the University of California.
|
||
|
|
.\" All rights reserved. The Berkeley software License Agreement
|
||
|
|
.\" specifies the terms and conditions for redistribution.
|
||
|
|
.\"
|
||
|
|
.\" @(#)fread.3s 6.1 (Berkeley) 5/15/85
|
||
|
|
.\"
|
||
|
|
.TH FREAD 3 "May 15, 1985"
|
||
|
|
.UC 4
|
||
|
|
.SH NAME
|
||
|
|
fread, fwrite \- buffered binary input/output
|
||
|
|
.SH SYNOPSIS
|
||
|
|
.nf
|
||
|
|
.ft B
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
size_t fread(void *\fIptr\fP, size_t \fIitemsize\fP, size_t \fInitems\fP, FILE *\fIstream\fP)
|
||
|
|
size_t fwrite(void *\fIptr\fP, size_t \fIitemsize\fP, size_t \fInitems\fP, FILE *\fIstream\fP)
|
||
|
|
.SH DESCRIPTION
|
||
|
|
.B Fread
|
||
|
|
reads, into a block beginning at
|
||
|
|
.IR ptr ,
|
||
|
|
.I nitems
|
||
|
|
of data of the type of
|
||
|
|
.I *ptr
|
||
|
|
from the named input
|
||
|
|
.IR stream .
|
||
|
|
It returns the number of items actually read.
|
||
|
|
.PP
|
||
|
|
If
|
||
|
|
.I stream
|
||
|
|
is
|
||
|
|
.B stdin
|
||
|
|
and the standard output is line buffered, then any partial output line
|
||
|
|
will be flushed before any call to
|
||
|
|
.BR read (2)
|
||
|
|
to satisfy the
|
||
|
|
.BR fread .
|
||
|
|
.PP
|
||
|
|
.B Fwrite
|
||
|
|
appends at most
|
||
|
|
.I nitems
|
||
|
|
of data of the type of
|
||
|
|
.I *ptr
|
||
|
|
beginning at
|
||
|
|
.I ptr
|
||
|
|
to the named output
|
||
|
|
.IR stream .
|
||
|
|
It returns the number of items actually written.
|
||
|
|
.SH "SEE ALSO"
|
||
|
|
.BR read (2),
|
||
|
|
.BR write (2),
|
||
|
|
.BR fopen (3),
|
||
|
|
.BR getc (3),
|
||
|
|
.BR putc (3),
|
||
|
|
.BR gets (3),
|
||
|
|
.BR puts (3),
|
||
|
|
.BR printf (3),
|
||
|
|
.BR scanf (3).
|
||
|
|
.SH DIAGNOSTICS
|
||
|
|
.B Fread
|
||
|
|
and
|
||
|
|
.B fwrite
|
||
|
|
return
|
||
|
|
0
|
||
|
|
upon end of file or error.
|