一个函数，输入n为偶数时，调用函数求1/2+1/4+...+1/n,当输入n为奇数时，调用函数 1/1+1/3+...+1/n(利用指针函数)-a function, even for the importation of n, the function call for 1/2 1/4 ... 1/n, when n is odd input, the function call 1/1 1/3 ... 1/n (using function pointer)
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001082s ]
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:0.093097s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001087s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001225s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001060s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003531s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001707s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006103s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014793s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001231s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 67814 [ RunTime:0.015735s ]
