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3#
發表於 2005-6-19 06:50 PM
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Originally posted by secretfj at 2005-6-19 06:37 PM:
4 R: u$ C. F- j6 p }8 N3 O有無人知點解?
2 V p6 v2 ~/ SServer 的Backup Code?2 Z/ H& b" U+ I# P8 c
so funny, thanks a lot! ( P) _; v2 ^ ]
7 }: ^5 I, U# d* [+ z( {# K! B好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面
- ]7 N. J% L y6 MMaximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff)
( z0 M9 k( n8 m9 B個 value 過左呢個 range 就會 overflow , 佢只會理最後個32bits 數 (即係好似返返轉頭 , 循環咁)
0 W5 d2 n; z# y' H( A; l, O; de.g.9 m0 o! f; b; ^/ I; V
0 + 4294967295 = 4294967295 (max)
0 n& V* B# q: ?. S( V& I. `, L/ e1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow), U+ f8 m, Y- M( ]0 R6 P& f
and so on....
4 Q& J' Z) e' J# R9 Z
3 N$ X$ S5 c9 N0 |) C[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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