#include
#include
#include
#include
#include
#include
#define DBHOST "localhost"
#define DBUSER "root"
#define DBPASS "***" //输入数据库密码
#define DBPORT 3306
#define DBNAME "test"
#define DBSOCK NULL //"/var/lib/mysql/mysql.sock"
#define DBPCNT 0
MYSQL_RES *result;
MYSQL_ROW row;
MYSQL_FIELD *field;
MYSQL *mysql,*a;
void menu() //显示界面
{
printf("1.返回数据\n");
printf("2.插入数据\n");
printf("3.删除数据\n");
printf("4.退出系统\n");
printf("5.显示主界面\n");
}
void loop(MYSQL *p)
{
int flag=1;
menu();
while(flag)
{
printf("请输入功能标号***\n");
scanf("%d",&flag);
printf("flag=%d\n",flag);
switch(flag){
case 1:{get_data(p);break;}
case 2:{insert(p);printf("insert done!\n");break;}
case 3:{delete(p);printf("delete done!\n");break;}
//case 4:{quit(p);}
case 5:{menu();break;}
default:{break;}
}
if(flag==4)
{
quit();
break;
}
else
continue;
}
}
int insert(MYSQL *p)//向数据库中插入数据
{
init_connect(p);
int no,age;
char name[20];
printf("插入数据 no,name,age请用换行符分隔\n");
scanf("%d\n%s\n%d",&no,name,&age);
char *sqls="insert into children values(%d,'%s',%d)";
char sqlsbuf[500];
sprintf(sqlsbuf,sqls,no,name,age);
if(0!=mysql_real_query(p,sqlsbuf,strlen(sqlsbuf)))
{
printf("insert query failed: %s\n", mysql_error(p));
mysql_close(p);
mysql_library_end();
return 0;
}
return 0;
}
int delete(MYSQL *p)//删除数据库中的一行数据
{
init_connect(p);
char name[20];
printf("删除数据delet one row data,请输入要删除的名字name:\n");
scanf("%s",name);
char *sqls="delete from children where fname='%s'";
char sqlsbuf[500];
sprintf(sqlsbuf,sqls,name);
if(0!=mysql_real_query(p,sqlsbuf,strlen(sqlsbuf)))
{
printf("delete query failed: %s\n", mysql_error(p));
mysql_close(p);
mysql_library_end();
return 0;
}
return 0;
}
int get_data(MYSQL *p)
{
const char *pStatement = "select * from children";
if(0!=mysql_real_query(p,pStatement,strlen(pStatement)))
{
printf("delete query failed: %s\n", mysql_error(p));
mysql_close(p);
mysql_library_end();
return 0;
}
unsigned int num_fields;
unsigned int i;
result = mysql_store_result(p);
if (result == NULL)
{
printf("fetch result failed: %s\n", mysql_error(p));
mysql_close(p);
mysql_library_end();
return 0;
}
num_fields = mysql_num_fields(result);
printf("numbers of result: %d\n", num_fields);
while (NULL != (field = mysql_fetch_field(result)))
{
printf("field name: %s\n", field->name);
}
while (NULL != (row = mysql_fetch_row(result)))
{
unsigned long *lengths;
lengths = mysql_fetch_lengths(result);
for (i = 0; i < num_fields; i++)
{
printf("{%.*s} ", (int) lengths[i], row[i] ? row[i] : "NULL");
}
printf("\n");
}
return 0;
}
int init_connect()
{
mysql=mysql_init(NULL);
mysql_library_init(0, NULL, NULL);
printf("执行数据库初始化\n");
unsigned int timeout = 3000;
mysql_options(mysql, MYSQL_OPT_CONNECT_TIMEOUT, &timeout);
if (mysql_real_connect(mysql, DBHOST, DBUSER, DBPASS, DBNAME, DBPORT, DBSOCK, DBPCNT) == NULL)
{
printf("connect failed: %s\n", mysql_error(mysql));
mysql_close(mysql);
mysql_library_end();
return 0;
}
printf("connect succssfully\n");
return 0;
}
int quit()
{
mysql_free_result(result);
mysql_close(mysql);
mysql_library_end();
printf("-----END-----\n");
}
int main()
{
init_connect();
loop(mysql);
return 0;
}
如果觉得《linux mysql c语言 api_linux连接MySQL数据库（C语言 API 分析 动态插入修改数据）》对你有帮助，请点赞、收藏，并留下你的观点哦！
