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#include
#include cmysql.h
#include stdio.h
#define mysql_port 3306
void process_result_set(mysql mysql, mysql_res *result);
void exit(mysql mydata,char *ep);
int main(int argc, char * argv[]) {
mysql mydata;
database_param p;
char queryname[600];
mysql_res *result=null;
int status =0;
//初始化
strcpy(p.host,127.0.0.1);
strcpy(p.user,root);
strcpy(p.password,root);
strcpy(p.db,im);
p.port = mysql_port;
//初始化数据结构
if(mysql_init(&mydata) == null)
{
printf(init mysql data stauct fail/n);
system(pause);
return -1;
}
//连接数据库
if(argc == 1)
{
if(null == mysql_real_connect(&mydata,p.host,p.user,p.password,
p.db,p.port,null,client_multi_statements))
{
printf(connect database fail,%s/n,mysql_error(&mydata));
system(pause);
return -1;
}
}
else
{
printf(run parameter error/n);
system(pause);
return -1;
}
//首先设置字符集
strcpy(queryname,set names gbkd);
if(mysql_query(&mydata,set names gbk)!=0)
{
exit(mydata,set names fail);
return -1;
}
//查询数据(支持单个字段和多个字段,输出排版)
strcpy(queryname,show databases);
if(mysql_query(&mydata,queryname) != 0)
{
exit(mydata,execute sql syntax fail);
return -1;
}
//取得查询结果
result= mysql_store_result(&mydata);
process_result_set(mydata,result);
//处理多条插入语句,在mysql_real_connect(......)函数里的最后一个参数更改为:client_multi_statements
strcpy(queryname,insert into fangl.admin(username,password) values('fangl1','fangl1'),('fangl2','fangl2'),('fangl3','fangl3');/
insert into fangl.admin(username,password) values('fl1','fl1'),('fl2','fl2'),('fl3','fl3');/
insert into fangl.admin(username,password) values('fal1','fal1'),('fal2','fal2'),('fal3','fal3');/
select * from fangl.admin);
if(mysql_query(&mydata,queryname)!=0)
{
exit(mydata,insert values fail);
return -1;
}
do {
/* did current statement return data? */
result = mysql_store_result(&mydata);
if (result)
{
/* yes; process rows and free the result set */
process_result_set(mydata, result);
mysql_free_result(result);
}
else /* no result set or error */
{
if (mysql_field_count(&mydata) == 0)
{
printf(%lld rows affected/n,
mysql_affected_rows(&mydata));
}
else /* some error occurred */
{
printf(could not retrieve result set/n);
break;
}
}
/* more results? -1 = no, >0 = error, 0 = yes (keep looping) */
if ((status = mysql_next_result(&mydata)) > 0)
printf(could not execute statement/n);
} while (status == 0);
//删除表中的数据
strcpy(queryname,delete from fangl.admin where username='fl1');
if(mysql_query(&mydata,queryname) != 0)
{
exit(mydata,execute sql syntax fail);
return -1;
}
//查询数据(支持单个字段和多个字段,输出排版)
strcpy(queryname,select * from fangl.admin);
if(mysql_query(&mydata,queryname) != 0)
{
return -1;
}
//取得查询结果
result= mysql_store_result(&mydata);
process_result_set(mydata,result);
//释放结果
if(result != null)
{
mysql_free_result(result);
}
mysql_close(&mydata);
system(pause);
return 1;
}
void process_result_set(mysql mydata, mysql_res *result)
{
int rowcount = mysql_num_rows(result); //查询结果有多少行
//取得各字段名
mysql_field *fields = null;
for(int i=0;fields=mysql_fetch_field(result);i++)
{
printf(%s ,fields->name);
}
printf(/n);
//依次读取各条记录
mysql_row currow = null;
while((currow = mysql_fetch_row(result)) != null)
{
for(int i = 0; i
{
printf(%s ,currow[i]?currow[i]:null);
}
printf(/n);
}
}
void exit(mysql mydata,char *ep)
{
mysql_close(&mydata);
printf(%s,%s/n,ep,mysql_error(&mydata));
system(pause);
}
以上是在vs 2008下编译并验证无误的,若有问题大家一起讨论,哈
本文出自 “lynn” 博客
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