编写程序，程序运行时使PC机成为一架可弹奏的“钢琴”。当按下数字键1~8，依次发出1，2，3，4，5，6，7，I八个音调。按CTRL+C则退出“钢琴”状态。-Write a program, the program is running to make PC-1 may play into the " piano." When pressing the number keys 1 to 8, followed by issue of 1,2,3,4,5,6,7, I eight tones. Press CTRL+ C has withdrawn from the " Piano" state.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001296s ]
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:0.066386s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000997s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001184s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000916s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003010s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000817s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003473s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015065s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001079s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 184545 [ RunTime:0.013272s ]
