一个printf的实现源代码，包括对浮点数等到字符串的格式化，与平台无关，可以方便在嵌入式中使用。-Printf realization of a source code, including the float until the string format, with platform-independent, it will be convenient to use in the embedded.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001315s ]
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:0.062918s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001126s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001208s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000952s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003191s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000814s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003855s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014616s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001385s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 148037 [ RunTime:0.016267s ]
