单词管理系统使用了C++语言连接MySQL数据库实现常规CRUD操作,界面为控制台窗体+文字显示的方式。
使用Win10 + Code::Blocks IDE编写。
运行截图
#include <stdio.h>
#include <winsock2.h> //进行网络连接
#include <mysql.h> //MySQL C API访问mysql数据库
#pragma comment (lib, "libmysql.lib")
#define N 50
typedef struct Dictionary
{
char id[50];
char eng[100];
char chi[100];
} Dictionary;
//变量配置
MYSQL *conn; //数据库连接句柄
MYSQL_RES *res; //执行数据库语言结果
MYSQL_ROW row; //存放一个数据记录
char* server = "localhost";//本地连接
char* user = "root";//
char* password = "yan19991001";//mysql密码
char* database = "dictionary";//数据库名
int t,rc;
char query[N]; //需要查询的语句
void readEng();
void addEng();
void delEng();
void modEng();
void seaEng();
void sort();
void sort(){
char id[N],eng[N],chi[N];
sprintf(query,"select * from test order by eng");
printf("查询语句:%s\n",query);
rc = mysql_query(conn,query);
if (0 != rc) {
printf("mysql_real_query(): %s\n", mysql_error(conn));
return -1;
}else{
printf("查询结果:\n");
res = mysql_use_result(conn); //获取结果
if (res)
{
while ((row = mysql_fetch_row(res)) != NULL)
{
//printf("num=%d\n",mysql_num_fields(res));//列数
for (t = 0; t < mysql_num_fields(res); t++)
printf("%8s ", row[t]);
printf("\n");
}
}
mysql_free_result(res);
}
}
void addEng()
{
char id[N],eng[N],chi[N];
printf("请输入要增加的词典信息:\n");
printf("编号:\n");
scanf("%s",id);
printf("单词:\n");
scanf("%s",eng);
printf("中文释义:\n");
scanf("%s",chi);
sprintf(query,"insert into test values('%s','%s','%s')",id,eng,chi);
printf("%s",query);
rc = mysql_query(conn,query);
if (0 != rc) {
printf("mysql_real_query(): %s\n", mysql_error(conn));
return -1;
}else{
printf("添加成功!\n");
}
//mysql_close(conn); //断开数据库
}
void delEng(){
char id[N];
printf("请输入你要删除的单词编号:");
scanf("%s",id);
sprintf(query,"delete from test where id = '%s'",id);
printf("查询语句:%s\n",query);
rc = mysql_query(conn,query);
if (0 != rc) {
printf("mysql_real_query(): %s\n", mysql_error(conn));
return -1;
}else{
printf("删除成功!\n");
}
}
void modEng(){
char id[N],eng[N],chi[N];
printf("请输入你要修改的单词编号:");
scanf("%s",id);
printf("单词:\n");
scanf("%s",eng);
printf("中文释义:\n");
scanf("%s",chi);
sprintf(query,"update test set eng = '%s',chi = '%s' where id = '%s'",eng,chi,id);
printf("查询语句:%s\n",query);
rc = mysql_query(conn,query);
if (0 != rc) {
printf("mysql_real_query(): %s\n", mysql_error(conn));
return -1;
}else{
printf("修改成功!\n");
}
}
void seaEng(){
char id[N],eng[N],chi[N];
printf("请输入你要查询的单词编号:");
scanf("%s",id);
sprintf(query,"select * from test where id = '%s'",id);
printf("查询语句:%s\n",query);
rc = mysql_query(conn,query);
if (0 != rc) {
printf("mysql_real_query(): %s\n", mysql_error(conn));
return -1;
}else{
printf("查询结果:\n");
res = mysql_use_result(conn); //获取结果
if (res)
{
while ((row = mysql_fetch_row(res)) != NULL)
{
//printf("num=%d\n",mysql_num_fields(res));//列数
for (t = 0; t < mysql_num_fields(res); t++)
printf("%8s ", row[t]);
printf("\n");
}
}
mysql_free_result(res);
}
}
void init()
{
conn = mysql_init(NULL); //句柄初始化
if (!mysql_real_connect(conn, server, user, password, database, 3306, NULL, 0)) //判断是否连接成功
{
printf("Error connecting to database:%s\n", mysql_error(conn));
}
else
{
printf("Connected...\n");
}
//字符编码，解决乱码
if (!mysql_set_character_set(conn, "gbk"))
{
printf("New client character set: %s\n",
mysql_character_set_name(conn));
}
}
void readEng()
{
char * query = "select * from test"; //需要查询的语句
if (mysql_query(conn, query))
{
printf("错误信息:%s\n", mysql_error(conn));
}
else
{
printf("查询结果:\n");
res = mysql_use_result(conn); //获取结果
if (res)
{
while ((row = mysql_fetch_row(res)) != NULL)
{
//printf("num=%d\n",mysql_num_fields(res));//列数
for (t = 0; t < mysql_num_fields(res); t++)
printf("%8s ", row[t]);
printf("\n");
}
}
mysql_free_result(res);
}
}
void menu()
{
int choice;
char id[20];
do
{
printf("------------------------------\n");
printf("0、退出\n");
printf("1、添加单词\n");
printf("2、删除单词\n");
printf("3、修改单词\n");
printf("4、查询单词\n");
printf("5、排序单词\n");
printf("6、显示单词\n");
printf("------------------------------\n");
printf("请输入选择:");
scanf("%d",&choice); //根据choice的值选取功能
switch(choice)
{
case 0:
exit(0);
break;
case 1:
addEng();
break;
case 2:
delEng();
break;
case 3:
modEng();
break;
case 4:
seaEng();
break;
case 5:
sort();
break;
case 6:
readEng();
break;
default:
printf("输入错误!");
}
system("pause");
system("cls");
}
while(choice != 0);
}
int main()
{
init();
menu();
return 0;
}数据库代码
/*
Navicat MySQL Data Transfer
Source Server : localhost_3306
Source Server Type : MySQL
Source Server Version : 50725
Source Host : localhost:3306
Source Schema : dictionary
Target Server Type : MySQL
Target Server Version : 50725
File Encoding : 65001
Date: 28/06/2021 13:44:35
*/
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for test
-- ----------------------------
DROP TABLE IF EXISTS `test`;
CREATE TABLE `test` (
`id` varchar(50) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
`eng` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL,
`chi` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL,
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_bin ROW_FORMAT = Dynamic;
-- ----------------------------
-- Records of test
-- ----------------------------
INSERT INTO `test` VALUES ('1', 'adopt', '领养');
INSERT INTO `test` VALUES ('2', 'pen', '钢笔');
INSERT INTO `test` VALUES ('3', 'apple', '苹果');
INSERT INTO `test` VALUES ('4', 'borrow', '借阅');
INSERT INTO `test` VALUES ('5', 'electric', '电力');
SET FOREIGN_KEY_CHECKS = 1;代码还是比较简单的,主要是不同编译器,它所对应的驱动方式会有所不同。因此如果想要移植到其它的IDE如: VC6++、VS、DEV 等,可能需要一些处理操作,还要添加数据库连接驱动和库函数。当然,难点也就在于获取ODBC连接,这块还是需要一些时间琢磨的。
