说明：  1）安装mysql：sudo apt-get install mysql-server mysql-client,这两个东西安装好后，（安装的过程中，会有设置用户名和密码的提示，我设置为root用户）sudo apt-get install libmysqlclient15-dev,(如果没有这一步，会找不到mysql.h)，安装完后，在/usr/include/mysql/ 下就会有mysql.h 2）登陆mysql数据库，mysql -uroot -p，回车输入密码，然后创建一个数据库，create table Lottery；，我创建了Lottery数据库。 3）附件是程序连接数据库，然后在Lottery中建立一个表。
(1) install mysql:sudo apt-get install mysql-server mysql-client, after the installation of these two things, (in the process of installation, there will be a user name and password prompt, I set to root user) sudo apt-get install libmysqlclient15-dev, (if no this step, will not find mysql.h), after the installation, in /usr/ There will be mysql.h under include/mysql/ 2) log in to the MySQL database, MySQL -uroot -p, enter the password in return, and create a database, create table Lottery; I created the Lottery database. 3) the appendix is that the program connects to the database and then establishes a table in Lottery.)