四舍五入取值???
怎样实现如:输入2.499995 输出2.5呢?2.5─〉3?
2.4─〉2?
急求教~~~
2008-07-22 09:30

2008-07-22 09:52

2008-07-22 09:55
2008-07-22 10:21
2008-07-22 11:37
2008-07-22 11:38
2008-07-22 20:50

2008-07-24 12:50
2008-07-24 12:53
2008-07-24 13:54