一个简单的WINDOWS编程的计算器，能实现加减乘除基本运算，初学者可以参看一下！-WINDOWS programming a simple calculator, to achieve the basic addition and subtraction multiplication and division operations, beginners can take a closer look!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002628s ]
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:0.088164s ]
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001951s ]
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