基于C++语言的一个数据结构问题，实现学生管理系统的编写，代码无注释-C++ language based on a data structure problem, the achievement of students in the preparation of management system, code-free notes
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.006986s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.113675s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001472s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002006s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001456s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005341s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002260s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005992s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.022063s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.003579s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 60673 [ RunTime:0.024385s ]
