求任意个数的平均值，输入数字就可以求得结果，是本人学习汇编的习作，请多指教。-seeking arbitrary number, the average import figures can be obtained result is a compilation of my learning exercises, please enlighten.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001269s ]
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:0.091542s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001193s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001895s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001228s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003560s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001034s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003212s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014649s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001364s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 124901 [ RunTime:0.001272s ]
