gaye

Originally posted by secretfj at 2005-6-19 06:37 PM:- o0 S, k, R* _% o9 o) m
有無人知點解?2 }1 c0 g( S& y( y* e* F
Server 的Backup Code?
6 B+ s  X2 @; R( A7 Hso funny, thanks a lot!

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6 A; x/ Y7 }, E+ f. |好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面  Z! d* g! X. a, Y4 h6 l
Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) 4 o$ n/ I* B+ 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)2 p/ r5 H: R9 w  p( u
e.g.
2 _* w% ]/ D0 Y$ b0 + 4294967295 = 4294967295 (max)
- l' T4 |0 R8 s, h1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)% X% a' j* j* y( Q0 |3 R
and 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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嘩

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& O' }; p# Q% E小弟都係比較多睇電腦雜誌