Xcode环境配置mysql

if(!mysql_init(&conn)) {
        fprintf(stderr, "init mysql failed! no free memory!\n");
        exit(0);
    }else{
        fprintf(stdout, "init mysql successful!\n");
    }//初始化数据库
    if(!mysql_real_connect(&conn, "localhost", "root", "12345", "mydb", 3308, NULL, 0))
        //分别使用主机名称，用户名，密码，数据库名称，端口
    {
        fprintf(stderr, "mysql connect failed!: Error %u(%s)\n", mysql_errno(&conn), mysql_error(&conn));
        mysql_close(&conn);
        exit(0);
    }else{
        fprintf(stdout, "mysql connect successful!\n");
    }//链接数据库
    if(mysql_select_db(&conn, "mydb")) {
        fprintf(stderr, "use database failed!: Error %u(%s)\n", mysql_errno(&conn), mysql_error(&conn));
        mysql_close(&conn);
        exit(0);
    }else{
        fprintf(stdout, "use database succeessful!\n");
    }//选择数据库
    mysql_query(&conn, "SET NAMES UTF8");//防止乱码，mysql为UTF-8编码