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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:
6 k) `% H, _$ {5 _: W. o有無人知點解?
* }. f! g3 t8 x% Q g4 AServer 的Backup Code?: \- W/ R) I8 t! Z8 O
so funny, thanks a lot! ! o% k& a" G2 N+ ~7 f. i! ~ `
& \1 ]9 P7 Q3 k: U b好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面
2 m/ j+ b/ k; c* lMaximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) 2 X, @; V" \9 }8 m6 i( 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)
; F# U+ T& ^4 }e.g.; S$ _& b2 {$ h6 c% |1 n
0 + 4294967295 = 4294967295 (max)) I* v9 A0 L+ _: p
1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)
+ C* y$ |% J2 k% q3 ?% d, Mand so on....
$ R2 X3 Y( F* F7 \% L& ^+ T2 b, A' W6 t
[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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