一本书里的源码，挺简单的，给学了一阵子C语言的朋友们。
只要仔细阅读一定能够会对你有很大帮助的。-A source book, very simple to learn C language for a while friends. Will certainly be able to read as long as you will be very useful.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001958s ]
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:0.086849s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001911s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001981s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002341s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003706s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002187s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003218s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014911s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002413s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 63089 [ RunTime:0.001143s ]
