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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:! Y: {: T& g3 b+ e
有無人知點解?
- g/ Z) J6 A1 K: K. G) mServer 的Backup Code?' j; H- t1 U$ Q# l' b. c( e5 H5 @8 x
so funny, thanks a lot! 5 d$ A, Z3 u2 N9 S8 a! o3 n/ Q/ w
; X$ H2 \9 @3 p6 l好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面
) Y( F* e2 W8 Z) E- CMaximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff)
9 c3 m4 |! ]" [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)
" D% a6 _% O# H2 ke.g.
1 U3 D- u9 o1 o! d, J0 + 4294967295 = 4294967295 (max), v( C! A$ P' \7 C" y, J" \4 \% d
1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)! m. h8 I8 a/ ]; _7 p
and so on...." j8 R" M4 h5 v9 w
) H3 D- v x: c- X, K5 e[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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