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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:
# I# b/ _ ]$ M. g$ f. u有無人知點解?
* p# x; L8 m7 UServer 的Backup Code?2 j8 Z8 O3 v" E, t( b
so funny, thanks a lot! ' Z( N/ ~8 o) X+ Y) ^5 m3 P
1 g I" e1 P# p) ]+ d! Z9 E' z好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面9 {8 [% U. q! U6 o' A6 P
Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff)
4 A5 x1 e& p( H3 t- Y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)
! C5 V7 d5 D T& t: S- x4 me.g.
7 A2 J. D# C6 j0 + 4294967295 = 4294967295 (max)0 z0 m- x/ u. a5 I, P% {
1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)
3 o! a3 U6 S1 Wand so on....
2 E& Y1 l$ W# q, }' S+ ?5 i, n1 m9 U; P+ n( U
[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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