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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:4 C9 g4 V3 G, c& _0 J7 m. @
有無人知點解?3 z+ W+ I$ \. T. e$ y7 O, @
Server 的Backup Code?- w+ a, s2 G0 e! B1 M
so funny, thanks a lot! 2 I4 g) F/ F3 | }; g1 B' D
d8 K% G# L: M, g2 }: K+ Z( z好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面. ?5 D+ C O. }+ p3 q- j
Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) ; H& l- j( h+ _5 b
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)
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0 + 4294967295 = 4294967295 (max)
& O/ m7 T( U) n/ v: o" E( B2 o- G1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)
5 L4 }; H. C$ Q# Iand so on....
0 p0 r' A' ?, c2 i" z! U' c- ~3 r% @/ C0 O; w4 ]: l6 U
[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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