用C语言实现了线段裁剪，代码可以直接复制到tc里面运行，很好实现了线段裁剪-With the C language to implement Line Clipping, code can be directly copied to the tc run inside, well realized Line Clipping
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.015325s ]
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:0.068670s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000965s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001048s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000983s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003101s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000875s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003449s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.013284s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.000992s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 298812 [ RunTime:0.208648s ]
