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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:* a+ _- \8 y% _1 \
有無人知點解?
1 `; G, f1 [4 e5 q8 bServer 的Backup Code?
2 s% \" Y; M: |) z& Nso funny, thanks a lot! 9 a4 }0 f& {# I6 H9 L7 {
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好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面/ k" e7 e$ e `
Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff)
; u9 |+ v. b9 V6 X8 R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)7 X( Z0 S" S. u# ]' t, Q# L/ e, J
1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)
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[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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