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.TH FREAD 3S
.CT 2 file_io
.SH NAME
fread, fwrite \(mi buffered binary input/output
.SH SYNOPSIS
.B #include <stdio.h>
.PP
.B int fread(ptr, sizeof(*ptr), nitems, stream)
.br
.SM
.B FILE
.B *stream;
.PP
.B int fwrite(ptr, sizeof(*ptr), nitems, stream)
.br
.SM
.B FILE
.B *stream;
.SH DESCRIPTION
.I Fread
reads from the named input
.IR stream 
at most
.I nitems
of data of the type of
.I *ptr
into a block beginning at
.I ptr.
It returns the number of items actually read.
.PP
.I Fwrite
appends to the named output
.I stream
at most
.I nitems
of data of the type of
.I *ptr
from a block beginning at
.I ptr.
It returns the number of items actually written.
.SH "SEE ALSO"
.IR read (2), 
.IR stdio (3)
.SH DIAGNOSTICS
.I Fread
and
.I fwrite
return a short count
upon end of file or error.
.SH BUGS
Write errors from 
.I fwrite
may be delayed until a subsequent
.IR stdio (3)
writing, seeking, or file-closing call.
.br
These routines are much slower than you might imagine.

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