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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:% S+ I% R: a) a# G/ }: o% }( c
有無人知點解?
8 d! M; G8 k' ` n) f R) o( FServer 的Backup Code?" ]% c. ~0 s$ T& W
so funny, thanks a lot! 4 o" M9 `& B1 E! r+ }
3 i( o j$ t1 t好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面
+ K. u, r! U% f2 ~Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) B" n+ G) z5 L
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)
7 J. Q2 t B) r) e+ te.g.$ i- S# O: D; j+ ^) |! s
0 + 4294967295 = 4294967295 (max)8 v. c: u" [9 s {2 e0 r1 b
1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)1 \0 [& a, ]! v' G; _; M
and so on..../ c# c2 s0 e. b/ A, W- L
& X8 F- E! n/ ?3 q7 a[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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