电子词典相关头文件里面的定义和声明

整个电子词典是分块做的：包含的Dic_Server.c,Dic_Client.c,db.c,query.c,xprtcl.c,dict.h,xprtcl.h,dict.txt(单词文件)

下面是dict.h代码：(汪老师的代码，这里做调试用)

/*
* (C) Copyright 2014
* http://www.farsight.com.cn/
* http://nj.hqyj.com/
*
* This program is distributed in the purpose for training only
* and hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Revision history
* ------------------------------------------------------
* 20150116 unicornx initial draft
* 20150311 unicornx moved _DEBUG to makefile
*/
/*
* common header file
*/
#ifndef _DICT_H_
#define _DICT_H_

#ifdef _DEBUG
#define dprintf printf
#else
#define dprintf(format, ...) ((void)0)
#endif /*_DEBUG */

#endif /* _DICT_H_ */

下面是xprtcl.h里面的声明程序，非常重要，在老师的程序上加了一个结构体成员，其他没有改动：

/*
* (C) Copyright 2014
* http://www.farsight.com.cn/
* http://nj.hqyj.com/
*
* This program is distributed in the purpose for training only
* and hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Revision history
* ------------------------------------------------------
* 20140928 unicornx initial archived
*/
/* sample codes for on-line dictionary project */
#ifndef _XPROTOCOL_H_
#define _XPROTOCOL_H_

#include <inttypes.h> /* for uint16_t */

#define MAXLEN_PASSWD 15
typedef struct xp_req_register {
char passwd[MAXLEN_PASSWD + 1];
} xp_req_reqister_t, xp_req_login_t;

#define MAXLEN_WORD 31
typedef struct xp_req_query {
char word[MAXLEN_WORD + 1];
} xp_req_query_t;

#define MAXLEN_TEXT 300
typedef struct xp_rpl_query {
char text[MAXLEN_TEXT];
} xp_rpl_query_t;

#define MAXLEN_TIME 19
typedef struct xp_rpl_history {
char word[MAXLEN_WORD + 1];
char time[MAXLEN_TIME + 1];
} xp_rpl_history_t;

#define MAXLEN_USRNAME 15

#define REQ_Register 0x0001
#define REQ_Login 0x0002
#define REQ_Logout 0x0003
#define REQ_Query 0x0004
#define REQ_History 0x0005
#define REQ_QUIT 0x0006
#define REQ_ERR_QUIT 0x0007

#define RPL_Register 0x8001
#define RPL_Login 0x8002
#define RPL_Query 0x8004
#define RPL_History 0x8005

#define RC_SUCCESS (uint16_t)0
#define RC_EREGISTER (uint16_t)1
#define RC_EQUERYHIS (uint16_t)2
#define RC_EQHISEND (uint16_t)3 /* End Of Reply for Query of HIStory */
#define RC_LOGINED (uint16_t)4
/* define more error code ...... */

/* use uint16_t instead of short to make sure codes portable */
typedef struct xp_hdr {
char usrname[MAXLEN_USRNAME + 1];
uint16_t cmd_type; /* in network byte order */
uint16_t ret_code; /* in network byte order, only used in reply */
} xp_hdr_t;

typedef union xp_data {
xp_req_reqister_t req_register;
xp_req_login_t req_login;
xp_req_query_t req_query;

xp_rpl_query_t rpl_query;
xp_rpl_history_t rpl_history;
} xp_data_t;

typedef struct xprotocol {
xp_hdr_t hdr;
xp_data_t word_data;
xp_data_t data;

} xprotocol_t;

int xp_send(int , xprotocol_t *);
ssize_t xp_recv(int, xprotocol_t *);

#endif /* _XPROTOCOL_H_ */