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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:
N( u1 u Q7 x8 a Q* h; n% i有無人知點解?# W3 l! m1 J3 P ]9 m3 C! Y1 n
Server 的Backup Code?! ]- c4 ^3 R- L$ b8 J% w
so funny, thanks a lot! # a3 P5 J( k: q; r! L/ o$ x' T7 p" `6 O& ]2 z6 f
好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面
: Y' ?5 }3 h8 D+ F; f2 }2 L1 NMaximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) : r$ e' K. x4 B/ M
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)
6 q, Y9 J# c3 Q9 p" T( Ie.g.7 Z4 D6 O0 o! `. q4 Y
0 + 4294967295 = 4294967295 (max)
; ?/ W! o9 z8 ?1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)* N1 Y* Q8 k" c) |/ W
and so on....
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4 F4 m9 _. C Y+ a, ~[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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