.cpp文件。输入中序表达式，可以计算10以内的整数四则混合运算。思路是用中序转后序，再进行计算。-. cpp file. Input sequence expression, can be calculated within 10 4 mixed-integer calculations. Idea is to be used in sequence after sequence, and then calculated.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001287s ]
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:0.084429s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001015s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001835s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001069s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003815s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001025s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004037s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015769s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001165s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 128065 [ RunTime:0.011024s ]
