相信计算机专业的学生在学《编译原理》时都做了有关求first和follow集的问题。此程序用VC++做，相信会给大家一定的帮助。-it s sure that the student of computer do first and follow when learning <>. This program uses vc++,and i am sure it is useful for everyone!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002297s ]
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:0.090453s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002534s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001981s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002410s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003997s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002084s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003474s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015745s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002667s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 65770 [ RunTime:0.001468s ]
