在线英英词典完整代码

注意：

创建sqlite3数据库:
输入命令：
1、 sqlite3 my.db
2、 sqlite3
3、 create table usr(name char,data char);
4、 create table record(name char, date char,word char);
5、下载词典：dict.txt放在当前目录下（链接：https://pan.baidu.com/s/1miL2h2w）；

6.编写Makefile：（gcc是按键Tab的间距）

all:
gcc server.c -lsqlite3 -o server
gcc client.c -o client

sever.c

#include <stdio.h>

#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sqlite3.h>
#include <signal.h>
#include <time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define DATABASE "my.db"
typedef struct
{
int type;
char name[20];
char data[256];

}MSG;

void do_register(int connectfd, MSG *msg, sqlite3 *db)
{
char sqlstr[128];
char *errmsg;

sprintf(sqlstr, "insert into usr values ('%s', '%s')", msg->name, msg->data);
printf("%s\n", sqlstr);
if (sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg) != SQLITE_OK)
{
sqlite3_free(errmsg);
sprintf(msg->data, "user %s already exist!!!", msg->name);

}
else
{
strncpy(msg->data, "OK", 256);

}
send(connectfd, msg, sizeof(MSG), 0);
return;

}
void do_login(int connectfd, MSG *msg, sqlite3 *db)
{
char sqlstr[128];
char *errmsg, **result;
int nrow, ncolumn;
sprintf(sqlstr, "select * from usr where name = '%s' and data = '%s'", msg->name, msg->data);
if (sqlite3_get_table(db, sqlstr, &result, &nrow, &ncolumn, &errmsg) != SQLITE_OK)
{
printf("error : %s\n", errmsg);
sqlite3_free(errmsg);

}
if (nrow == 0)
{
strncpy(msg->data, "name or password is wrong!!!", 256);

}
else
{
strncpy(msg->data, "OK", 256);

}
send(connectfd, msg, sizeof(MSG), 0);
sqlite3_free_table(result);
return;

}
void get_date(char date[])
{
time_t t;
struct tm *tp;
time(&t);
tp = localtime(&t);
strftime(date, 64, "%Y-%m-%d %H:%M:%S", tp);
return;

}
int do_searchword(int connectfd, MSG *msg)
{
FILE *fp;
char s[300];
char *p;
if ((fp = fopen("dict.txt", "r")) == NULL)
{
strcpy(msg->data, "dict on server can't be opened :(");
send(connectfd, msg, sizeof(MSG), 0);
}
printf("query word is %s\n", msg->data);
while (fgets(s, 300, fp) != NULL)
{
if (0 == strncmp(msg->data,s,strlen(msg->data)) )
{
p = s + strlen(msg->data);
while(0 == strncmp(p," ",1) ) p++;
strcpy(msg->data,p);
send(connectfd,msg,sizeof(MSG),0);
fclose(fp);
return 1;
}

}
fclose(fp);
return 0;
}
void do_query(int connectfd, MSG *msg, sqlite3 *db)
{
char sqlstr[128], *errmsg;
int found = 0;
char date[64], word[64];
strcpy(word, msg->data);
found = do_searchword(connectfd, msg);
if ( found )
{
get_date(date);
sprintf(sqlstr, "insert into record values ('%s', '%s', '%s')", msg->name, date, word);
if (sqlite3_exec(db, sqlstr, NULL, NULL, &errmsg) != SQLITE_OK)
{
printf("error : %s\n", errmsg);
sqlite3_free(errmsg);

}

}
else
{
strcpy(msg->data, "not found\n");

}
send(connectfd, msg, sizeof(MSG), 0);
return;

}
int history_callback(void *arg, int f_num, char **f_value, char **f_name)
{
int connectfd;
MSG msg;
connectfd = *(int *)arg;
sprintf(msg.data, "%s : %s", f_value[1], f_value[2]);
send(connectfd, &msg, sizeof(msg), 0);
return 0;

}
void do_history(int connectfd, MSG *msg, sqlite3 *db)
{
char sqlstr[128], *errmsg;
sprintf(sqlstr, "select * from record where name = '%s'", msg->name);
if (sqlite3_exec(db, sqlstr, history_callback, (void *)&connectfd, &errmsg) != SQLITE_OK)
{
printf("error : %s\n", errmsg);
sqlite3_free(errmsg);

}
msg->data[0] = '\0';
send(connectfd, msg, sizeof(MSG), 0);

return;

}
void do_client(int connectfd, sqlite3 *db)
{
MSG msg;
while (recv(connectfd, &msg, sizeof(msg), 0) > 0)
{
switch ( msg.type )
{
case 1 :
do_register(connectfd, &msg, db);
break;
case 2 :
do_login(connectfd, &msg, db);
break;
case 3 :
do_query(connectfd, &msg, db);
break;
case 4 :
do_history(connectfd, &msg, db);
break;

}

}
printf("client quit!!!\n");
exit(0);
return;

}

int main(int argc, char *argv[])
{
int listenfd, connectfd;
struct sockaddr_in server_addr;
pid_t pid;
sqlite3 *db;

if (sqlite3_open(DATABASE, &db) != SQLITE_OK)
{
printf("error : %s\n", sqlite3_errmsg(db));
exit(-1);

}
if ((listenfd = socket(PF_INET, SOCK_STREAM, 0)) < 0)
{
perror("fail to socket");
exit(-1);
}
printf("listenfd=%d\n",listenfd);
bzero(&server_addr, sizeof(server_addr));
server_addr.sin_family = PF_INET;
server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
server_addr.sin_port = htons(8888);
printf("[Port]=%d\n[IP]=%s\n",htons(server_addr.sin_port),inet_ntoa(server_addr.sin_addr));
if (bind(listenfd, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0)
{
perror("fail to bind");
exit(-1);
}
printf("server bind succeed\n");

if (listen(listenfd, 5) < 0)
{
perror("fail to listen");
exit(-1);

}
printf("server listen succeed\n");
signal(SIGCHLD, SIG_IGN); // 为了不生成僵尸进程
while (1)
{
if ((connectfd = accept(listenfd, NULL, NULL)) < 0)
{
perror("fail to accept");
exit(-1);
}

if ((pid = fork()) < 0) //多进程
{
perror("fail to fork");
exit(-1);

}
if (pid == 0) //子进程
{
do_client(connectfd, db);

}
close(connectfd);
}
return 0;

}

client.c

#include<stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sqlite3.h>
#include <signal.h>
#include <time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define DATABASE "my.db"
typedef struct
{
int type;
char name[20];
char data[256];

}MSG;

void do_register(int socketfd, MSG *msg)
{
msg->type = 1;
printf("input name : ");
scanf("%s", msg->name);
printf("input password : ");
scanf("%s", msg->data);
send(socketfd, msg, sizeof(MSG), 0);
recv(socketfd, msg, sizeof(MSG), 0);
printf("register : %s\n", msg->data);
return;

}

int do_login(int socketfd, MSG *msg)
{
msg->type = 2;
printf("input name : ");
scanf("%s", msg->name);
printf("input password : ");
scanf("%s", msg->data);
send(socketfd, msg, sizeof(MSG), 0);
recv(socketfd, msg, sizeof(MSG), 0);
if (strncmp(msg->data, "OK", 3) == 0)
{
printf("login : OK\n");
return 1;

}
printf("login : %s\n", msg->data);
return 0;

}

void do_query(int socketfd, MSG *msg)
{
msg->type = 3;
while (1)
{
printf("Input:");
scanf("%s", msg->data);

if (strcmp(msg->data, "#") == 0) break; //输入“#”退出
send(socketfd, msg, sizeof(MSG), 0);
recv(socketfd, msg, sizeof(MSG), 0);
printf("%s\n",msg->data);

}
return;

}

void do_history(int socketfd, MSG *msg)
{
msg->type = 4;
send(socketfd, msg, sizeof(MSG), 0);
while (1)
{
recv(socketfd, msg, sizeof(MSG), 0);
if (msg->data[0] == '\0') break;
printf("%s\n", msg->data);
}
return;

}

int main(int argc, char *argv[])
{
int socketfd ;
struct sockaddr_in server_addr;
MSG msg;
if ((socketfd = socket(PF_INET, SOCK_STREAM, 0)) < 0)
{
perror("fail to socket");

}
bzero(&server_addr, sizeof(server_addr));
server_addr.sin_family = PF_INET;
server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
server_addr.sin_port = htons(8888);
if (connect(socketfd, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0)
{
perror("fail to connect");
exit(-1);
}
int n;
while (1)
{
printf("************************************\n");
printf("*********** 1:register *************\n");
printf("*********** 2: login *************\n");
printf("*********** 3: quit *************\n");
printf("************************************\n");
printf("please choose : ");
if (scanf("%d", &n) <= 0)
{
perror("scanf");
exit(-1);

}
switch (n)
{
case 1 :
do_register(socketfd, &msg);
break;
case 2 :
if (do_login(socketfd, &msg) == 1)
{
printf("\n");
goto next;
}
break;
case 3 :
close(socketfd);
exit(0);

}

}
next:
while (1)
{
printf("***********************************************\n");
printf("* 1: query_word 2: history_record 3: quit *\n");
printf("***********************************************\n");
printf("please choose : ");
if (scanf("%d", &n) < 0)
{
perror("scanf");
exit(-1);

}
switch (n)
{
case 1 :
do_query(socketfd, &msg);
break;
case 2 :
do_history(socketfd, &msg);
break;
case 3 :
close(socketfd);
exit(0);
}

}
return 0;
}

在线英英词典完整代码相关推荐

python--jieba分词、词性标注、关键词提取、添加自定义词典完整代码示例
jieba 是目前最好的 Python 中文分词组件,它主要有以下 3 种特性: 支持 3 种分词模式:精确模式.全模式.搜索引擎模式支持繁体分词支持自定义词典 1 分词可使用 jieba. ...
电子英汉词典附带背单词功能C语言程序设计，附录完整代码
电子英汉词典附带背单词功能C语言程序设计,附录完整代码系统需求分析本程模拟面对英语单词有背诵和查询需求的用户.用户在实际学习过程中可能会遇到学习单词时实体单词书体积大不方便的情况,这时就可以使用便 ...
python软件界面翻译_python英汉词典,在线翻译器,带GUI界面下载
使用请求模块获得的职位信息有道词典网页,BeautifulSoup获得所需的内容,并生成gui界面通过tkinter模块.2. Python实现翻译工具git源代码地址代码如下:# !\/bin\/e ...
python电子英汉词典显示_如何使用python为Linux打造一款命令行下的在线英汉词典...
项目说明 : 在linux终端下有时候遇到一个想查询的英语单词 , 但是不想打开浏览器去谷歌或者百度去搜索 , 因此就写了这个基于爬虫的单词翻译工具 , 实现原理很简单 , 基本开发已经完成 ,总共有 ...
基于linux的在线英汉词典（带源码）
源码下载: 基于Linux的在线英汉词典-网络基础文档类资源-CSDN文库https://download.csdn.net/download/qq_63626307/86744311?spm=100 ...
linux英汉字典代码,Ubuntu安装英汉词典(词库)详细步骤
Ubuntu安装英汉词典(词库)详细步骤发布时间:2013-05-26 11:26:08 作者:佚名我要评论 linux并不缺少词典软件.但是缺少词库.所有的词典软件都需要,自己下载安装词 ...
常用在线英汉、英英词典
英汉词典站点: Dict.CN: http://dict.cn/ 百度词典: http://dict.baidu.com/ 英英词典站点: TheFreeDictionary: http ...
[Silverlight]使用MVVM模式打造英汉词典
最近比较关注MVVM(Model-View_ViewModel)模式,该模式十分适合WPF/Silverlight的开发.出于练习的目的打算使用Silverlight做个英汉词典(可能是由于近来疯狂的 ...
2018-09-06 Java实现英汉词典API初版发布在Maven
在打算批量代码汉化工具 · Issue #86 · program-in-chinese/overview时, 发现没有现成的Java库实现英汉查询功能. 于是开此项目. 源码库: program-i ...
[转]为iPhone4S和iOS5增加全局英汉词典教程
[转自http://www.app178.com/jiaocheng/iPhone/20120202/17671.html] iOS5自带了翻译软件,但是默认的词典只有英英和日语词典,没有国内最需要的 ...

在线英英词典完整代码

在线英英词典完整代码相关推荐

最新文章

热门文章