C/C++ 连接MySql数据库的方法

1>------ 已启动全部重新生成: 项目: MySql-Connect, 配置: Debug Win32 ------ 
1>正在删除项目“MySql-Connect”(配置“Debug|Win32”)的中间文件和输出文件 
1>正在编译... 
1>MySql_Connect.cpp 
1>x:\编程练习\c-c++\c\mysql_connect.cpp(35) : warning C4996: 'scanf': This function or variable may be unsafe. Consider using scanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. 
1>    d:\program files\microsoft visual studio 9.0\vc\include\stdio.h(306) : 参见“scanf”的声明 
1>x:\编程练习\c-c++\c\mysql_connect.cpp(72) : warning C4996: 'sprintf': This function or variable may be unsafe. Consider using sprintf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. 
1>    d:\program files\microsoft visual studio 9.0\vc\include\stdio.h(366) : 参见“sprintf”的声明 
1>x:\编程练习\c-c++\c\mysql_connect.cpp(86) : warning C4996: 'sprintf': This function or variable may be unsafe. Consider using sprintf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. 
1>    d:\program files\microsoft visual studio 9.0\vc\include\stdio.h(366) : 参见“sprintf”的声明 
1>正在编译资源清单... 
1>Microsoft (R) Windows (R) Resource Compiler Version 6.1.6723.1 
1>Copyright (C) Microsoft Corporation. All rights reserved. 
1>正在链接... 
1>LINK : 没有找到 d:\我的文档\Visual Studio 2008\Projects\MySql-Connect\Debug\MySql-Connect.exe 或上一个增量链接没有生成它；正在执行完全链接 
1>MySql_Connect.obj : error LNK2019: 无法解析的外部符号 _mysql_close@4，该符号在函数 _main 中被引用 
1>MySql_Connect.obj : error LNK2019: 无法解析的外部符号 _mysql_free_result@4，该符号在函数 _main 中被引用 
1>MySql_Connect.obj : error LNK2019: 无法解析的外部符号 _mysql_num_fields@4，该符号在函数 _main 中被引用 
1>MySql_Connect.obj : error LNK2019: 无法解析的外部符号 _mysql_fetch_row@4，该符号在函数 _main 中被引用 
1>MySql_Connect.obj : error LNK2019: 无法解析的外部符号 _mysql_store_result@4，该符号在函数 _main 中被引用 
1>MySql_Connect.obj : error LNK2019: 无法解析的外部符号 _mysql_error@4，该符号在函数 _main 中被引用 
1>MySql_Connect.obj : error LNK2019: 无法解析的外部符号 _mysql_real_query@12，该符号在函数 _main 中被引用 
1>MySql_Connect.obj : error LNK2019: 无法解析的外部符号 _mysql_select_db@8，该符号在函数 _main 中被引用 
1>MySql_Connect.obj : error LNK2019: 无法解析的外部符号 _mysql_real_connect@32，该符号在函数 _main 中被引用 
1>MySql_Connect.obj : error LNK2019: 无法解析的外部符号 _mysql_init@4，该符号在函数 _main 中被引用 
1>d:\我的文档\Visual Studio 2008\Projects\MySql-Connect\Debug\MySql-Connect.exe : fatal error LNK1120: 10 个无法解析的外部命令 
1>生成日志保存在“file://d:\我的文档\Visual Studio 2008\Projects\MySql-Connect\MySql-Connect\Debug\BuildLog.htm” 
1>MySql-Connect - 11 个错误，3 个警告 
========== 全部重新生成: 成功 0 个，失败 1 个，跳过 0 个 ==========

 #include <windows.h>
 #include "stdio.h"
 #include "winsock.h" 
 #include "mysql.h" 
  
  
 int main()
 {
  
 MYSQL * con; //= mysql_init((MYSQL*) 0); 
 MYSQL_RES *res;
 MYSQL_ROW row;
  
  
 char tmp[400];
  
 //database configuartion
 char dbuser[30]="root"; 
 char dbpasswd[30]="apple";
 char dbip[30]="localhost";
 char dbname[50]="excel";
 char tablename[50]="test";
 char *query=NULL;
  
  
 int x;
 int y;
 int rt;//return value
 unsigned int t;
  
 int count = 0;
  
  
 printf("input x,y\n");
 scanf("%d,%d",&x,&y);
 fflush(stdin);
 printf("input over\n");
 con = mysql_init((MYSQL*) 0); 
  
  
 if ( con !=NULL && mysql_real_connect(con,dbip,dbuser,dbpasswd,dbname,3306/*TCP IP端口*/,NULL/*Unix Socket 连接类型*/,0/*运行成ODBC数据库标志*/) ) 
 { 
   if (!mysql_select_db(con,dbname)) 
   { 
     printf("Select successfully the database!\n"); 
     
     con ->reconnect = 1; 
  
     query = "set names \'GBK\'";
     //mysql_query(con,"set names \'GBK\'"); 
     
     rt=mysql_real_query(con,query,strlen(query));
     if (rt)
     {
       printf("Error making query: %s !!!\n",mysql_error(con));
     }
     else
     {
       printf("query %s succeed!\n",query);
     }
     
   }
 }
  
 else
 {
   MessageBoxA(NULL,"Unable to connect the database,check your configuration!","",NULL);
  
 }
  
   //sprintf(tmp,"update %s set 商品=\'%s\',卖出=%d,成交=%d,涨跌=%d,买进=%d,总量=%d,涨幅=%f,时间=\'%s\' where %s",tablename,goods,sold,deal,fluctuate,buy,total,delta,time,UpdateCon);
   sprintf(tmp,"insert into %s values(%s,%d,%d)",tablename,"null",x,y); //注意如何向具有自增字段的数据库中插入记录
   //MessageBoxA(NULL,tmp,tmp,MB_OK);
   //mysql_query(con,tmp);
  
   rt=mysql_real_query(con,tmp,strlen(tmp));
   if (rt)
   {
     printf("Error making query: %s !!!\n",mysql_error(con));
   }
   else
   {
     printf("%s executed!!!\n",tmp);
   }
   
   sprintf(tmp,"select * from %s",tablename);
   
   rt=mysql_real_query(con,tmp,strlen(tmp));
   if (rt)
   {
     printf("Error making query: %s !!!\n",mysql_error(con));
   } 
   else
   {
     printf("%s executed!!!\n",tmp);
   }
   
   res = mysql_store_result(con);//将结果保存在res结构体中
  
   while(row = mysql_fetch_row(res)) 
   { 
     /** 
     * MYSQL_ROW STDCALL mysql_fetch_row(MYSQL_RES *result); 
      * 检索行 
     */ 
  
     for(t=0;t<mysql_num_fields(res);t++) 
     { 
       printf("%s ",row[t]); 
     } 
     printf(".............\n"); 
     count ++;
   } 
   printf("number of rows %d\n",count);
   printf("mysql_free_result...\n"); 
   mysql_free_result(res); 
  
   mysql_close(con);
   return 0;
  
 }

 SET FOREIGN_KEY_CHECKS=0;
 -- ----------------------------
 -- Table structure for `test`
 -- ----------------------------
 DROP TABLE IF EXISTS `test`;
 CREATE TABLE `test` (
  `x` bigint(4) NOT NULL AUTO_INCREMENT,
  `y` int(4) DEFAULT NULL,
  `z` int(4) DEFAULT NULL,
  PRIMARY KEY (`x`)
 ) ENGINE=InnoDB AUTO_INCREMENT=118 DEFAULT CHARSET=latin1;
  
 -- ----------------------------
 -- Records of test
 -- ----------------------------
 INSERT INTO `test` VALUES ('95', '12432', '4334');
 INSERT INTO `test` VALUES ('96', '213', '321');
 INSERT INTO `test` VALUES ('97', '213', '213');
 INSERT INTO `test` VALUES ('98', '123', '231');
 INSERT INTO `test` VALUES ('99', '321', '231');
 INSERT INTO `test` VALUES ('100', '123', '32132');
 INSERT INTO `test` VALUES ('101', '777', '32213');
 INSERT INTO `test` VALUES ('102', '123', '213');
 INSERT INTO `test` VALUES ('103', '21', '321');
 INSERT INTO `test` VALUES ('104', '324', '432');
 INSERT INTO `test` VALUES ('105', '132', '231');
 INSERT INTO `test` VALUES ('106', '324', '342');
 INSERT INTO `test` VALUES ('107', '23', '23');
 INSERT INTO `test` VALUES ('108', '12', '21');
 INSERT INTO `test` VALUES ('109', '231', '321');
 INSERT INTO `test` VALUES ('110', '123', '231');
 INSERT INTO `test` VALUES ('111', '123', '231');
 INSERT INTO `test` VALUES ('112', '123', '123');
 INSERT INTO `test` VALUES ('113', '312', '231');
 INSERT INTO `test` VALUES ('114', '312', '321');
 INSERT INTO `test` VALUES ('115', '23', '3');
 INSERT INTO `test` VALUES ('116', '213', '312');
 INSERT INTO `test` VALUES ('117', '2', '3');
  
 -- ----------------------------
 -- Table structure for `xqdata`
 -- ----------------------------
 DROP TABLE IF EXISTS `xqdata`;
 CREATE TABLE `xqdata` (
  `代码` varchar(20) NOT NULL DEFAULT '',
  `商品` varchar(20) CHARACTER SET utf8 DEFAULT NULL,
  `卖出` bigint(20) DEFAULT NULL,
  `成交` bigint(20) DEFAULT NULL,
  `涨跌` bigint(20) DEFAULT NULL,
  `买进` bigint(20) DEFAULT NULL,
  `总量` bigint(20) DEFAULT NULL,
  `涨幅` double DEFAULT NULL,
  `时间` time DEFAULT NULL,
  PRIMARY KEY (`代码`)
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1;
  
 -- ----------------------------
 -- Records of xqdata
 -- ----------------------------
 INSERT INTO `xqdata` VALUES ('FITX*1', '商品', '34', '43', '23', '34', '0', '1.4', '13:23:08');