gaye

Originally posted by secretfj at 2005-6-19 06:37 PM:
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Server 的Backup Code?
! @* ~5 e/ H& t  m* e4 j; Kso funny, thanks a lot!

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好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面
$ m5 E3 ?$ V3 A8 M9 ]Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) $ M- i  H' |4 Q# w* L5 S4 ]
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)
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0 + 4294967295 = 4294967295 (max)
# ^4 F8 x4 V" D# f0 ]1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)
+ d: n$ y7 t7 u) S; e8 q$ }, Rand so on....6 p! q/ ]% R4 N! ~( d+ w

/ S% [! {2 u5 W# U! k# P% P0 i) t& h) y% j[ Last edited by gaye on 2005-6-19 at 06:57 PM ]

gaye

Originally posted by crap at 2005-6-19 07:14 PM:  ?; Y. o+ U" @
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/ ^7 @) ^' ?& D嘩

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$ E5 w0 R) c6 I0 h2 X: O5 m小弟都係比較多睇電腦雜誌