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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:% ]% o( G; R$ s/ K" @" m
有無人知點解?
0 I. M& Z3 Z/ w" E1 iServer 的Backup Code?9 z5 I5 B) E9 }9 g2 d$ \
so funny, thanks a lot! , b$ R0 F' w3 `, y
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好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面
9 p+ o/ v9 e' f- p+ _, ^( x) a5 F. l6 FMaximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) 4 x* w, Y' o2 q: a( H$ \( T q% @! ^
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)
5 c5 u7 f4 ~6 v7 K- H1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)6 _# c1 G+ D5 |
and so on....
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[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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