gaye

Originally posted by secretfj at 2005-6-19 06:37 PM:
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Server 的Backup Code?
) S* T' X. `, y1 {& \! V7 p$ {1 Uso 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; z: ~7 H, ?4 H) O4 N. Y5 h
Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff)
8 c5 L% z4 U8 Q  T/ ]6 H  ]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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7 H4 _- P3 p5 }" H0 + 4294967295 = 4294967295 (max)
7 w; I9 G2 M- p' ^+ Z$ B# q- v1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)
8 H% ?; u: B, G2 rand so on....
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[ Last edited by gaye on 2005-6-19 at 06:57 PM ]

gaye

Originally posted by crap at 2005-6-19 07:14 PM:
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& w+ @' B8 W8 N/ O小弟都係比較多睇電腦雜誌