database:mysql.h: No such file or directory

在Ubuntu体系中，已经安装了mysql，即应用sudo apt-get install mysql-server mysql-client

但是用C编译mysql数据库时，报错
fatal error: mysql.h: No such file or directory
出现这个错误是因为体系没有安装mysql开发库 

执行下面指令安装
sudo apt-get install libmysql++-dev
编译时须要加连接-lmysqlclient.

编译源法度的时辰，如下号令：

gcc -I/usr/include/mysql *.c -L/usr/lib/mysql -lmysqlclient -o *

g++ -I/usr/include/mysql csql_demo.cpp -L/usr/lib/mysql -lmysqlclient -o csql_demo.e

and then i got:

$ ./csql_demo.e 
Error connecting to Mysql!

change the password and the database  name and fixed it now .

    /*练习mysql数据库的连接*/    
    #include    
    #include     
        
    int main()    
    {    
        MYSQL mysql;    
        int t, r;    
        /*连接之前，先用mysql_init初始化MYSQL连接句柄*/    
        mysql_init(&mysql);    
        /*使用mysql_real_connect连接服务器,其参数依次为MYSQL句柄，服务器IP地址，  
        登录mysql的用户名，密码，要连接的数据库等*/    
        if(!mysql_real_connect(&mysql, "localhost", "root", "123123", "yayaya", 0, NULL, 0))     
            printf("Error connecting to Mysql!\n");    
        else    
            printf("Connected Mysql successful!\n");    
            
        /*关闭连接*/    
        mysql_close(&mysql);    
        return 0;    
    }  

log in mysql from terminal and

create database yayaya;

and then do this again :

g++ -I/usr/include/mysql csql_demo.cpp -L/usr/lib/mysql -lmysqlclient -o csql_demo.e

./csql_demo.e

Connected Mysql successful!