Copyright (c) 1990 The Regents of the University of California.
All rights reserved.

This code is derived from software contributed to Berkeley by
Chris Torek.

%sccs.include.redist.man%

@(#)fread.3 6.3 (Berkeley) 01/20/91

C 7 fread, fwrite - stream binary input/output

#include <stdio.h>

int
fread(void *ptr, size_t size, size_t count, FILE *stream);

int
fwrite(void *ptr, size_t size, size_t count, FILE *stream);

Fread reads count items of data, each size bytes long, from the given input stream , storing them at the location given by ptr . It returns the actual count of items read (which will be less than count in the event of an EOF or error).

Fwrite writes count items of data, each size bytes long, to the given output stream , obtaining them from the location given by ptr . It returns the actual count of items written.

These functions return 0 (or a short count) upon end of file or error. read(2), write(2), fopen(3), getc(3), putc(3), stdio(3)