fputs.c

标准c库代码,可以应用于各个系统提供了大量的基本函数

/*
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

/*
FUNCTION
<<fputs>>---write a character string in a file or stream

INDEX
	fputs

ANSI_SYNOPSIS
	#include <stdio.h>
	int fputs(const char *<[s]>, FILE *<[fp]>);

TRAD_SYNOPSIS
	#include <stdio.h>
	int fputs(<[s]>, <[fp]>)
	char *<[s]>;
	FILE *<[fp]>;

DESCRIPTION
<<fputs>> writes the string at <[s]> (but without the trailing null)
to the file or stream identified by <[fp]>.

RETURNS
If successful, the result is <<0>>; otherwise, the result is <<EOF>>.

PORTABILITY
ANSI C requires <<fputs>>, but does not specify that the result on
success must be <<0>>; any non-negative value is permitted.

Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
*/

#include <stdio.h>
#include <string.h>
#include "fvwrite.h"

/*
 * Write the given string to the given file.
 */

int
_DEFUN (fputs, (s, fp),
	char _CONST * s _AND
	FILE * fp)
{
  struct __suio uio;
  struct __siov iov;

  iov.iov_base = s;
  iov.iov_len = uio.uio_resid = strlen (s);
  uio.uio_iov = &iov;
  uio.uio_iovcnt = 1;
  return __sfvwrite (fp, &uio);
}