c++实现四则运算.zip 这是一个大学生用编写的四则运算程序，请大家指点-c achieve four operations. This is a zip students with the preparation of the four Operational procedures, please guidance
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001472s ]
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:0.103856s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001416s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001972s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001437s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003715s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001229s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003313s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014963s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001654s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 65969 [ RunTime:0.001449s ]
