gaye

Originally posted by secretfj at 2005-6-19 06:37 PM:4 Y- h* |+ B% ]: X
有無人知點解?7 J3 x4 \# K; ?/ E, A3 U
Server 的Backup Code?+ Z# k# D1 t: D3 t/ {
so funny, thanks a lot!

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好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面1 N/ |* Q  M5 w& L! c5 x7 p
Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff)
% J6 U9 b& U0 |2 B$ K; f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 N. k9 j" x: G7 r) r! H
e.g.0 O" n6 I- P2 j0 J
0 + 4294967295 = 4294967295 (max)5 Q4 T  y& T' E
1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)2 \" L5 ]2 f& P" d. f( B; u7 C& U
and so on....% c+ k$ R+ Q! b$ n

& l$ C+ y) S- o[ Last edited by gaye on 2005-6-19 at 06:57 PM ]

gaye

Originally posted by crap at 2005-6-19 07:14 PM:% q" Q# ^( f+ R8 _2 z

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- _/ k8 P& n% H, s, F小弟都係比較多睇電腦雜誌