1。stdio.h
/***
*stdio.h - definitions/declarations for standard I/O routines
*
* Copyright (c) 1985-1997, Microsoft Corporation. All rights reserved.
*
*Purpose:
* This file defines the structures, values, macros, and functions
* used by the level 2 I/O ("standard I/O") routines.
* [ANSI/System V]
*
* [Public]
*
****/
2.stdlib.h
/***
*stdlib.h - declarations/definitions for commonly used library functions
*
* Copyright (c) 1985-1997, Microsoft Corporation. All rights reserved.
*
*Purpose:
* This include file contains the function declarations for commonly
* used library functions which either don't fit somewhere else, or,
* cannot be declared in the normal place for other reasons.
* [ANSI]
*
* [Public]
*
****/