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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:. X- z8 p+ x! z4 x
有無人知點解?
+ G! s- z7 X1 q5 Y# [; aServer 的Backup Code?
+ T7 ^) O% @) [0 c+ z) H3 tso funny, thanks a lot! : l& U# Z3 L2 g8 e/ `0 b. r
* B: }0 b. {9 L, y3 `6 M' Y8 @好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面$ }# E+ h# w9 O' U/ l! f: L
Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) 2 v8 P9 `) w! x4 G
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)! K" ?4 f, \4 g/ h
e.g.: Q, _ u5 o6 `
0 + 4294967295 = 4294967295 (max)) M9 v3 ~/ Q/ A2 }( V& R$ B
1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)/ `' j& k8 z! i) n) Z
and so on....
2 E) u+ k `3 E: b, H6 Q! r
3 P5 D# b6 A: o C0 R- r[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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