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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:
- K/ C' f/ q: @3 W/ P有無人知點解?
+ k1 N9 p. c1 ~% cServer 的Backup Code?
4 t5 @4 Z' c3 a& F! [+ iso funny, thanks a lot! ; V+ L* z8 _& b1 }7 C# f" A! f
; Q& J9 L$ J5 _4 D7 k8 h好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面5 ?! q4 @# a6 ^+ l
Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) ; `$ p, E- y0 N9 V4 h' P
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)
# S9 T, Z* T. q& J$ q7 we.g./ Q& v* E# ~& ~: Y/ \8 `
0 + 4294967295 = 4294967295 (max)) @$ a2 W- F3 N1 N: m
1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)3 P% Q, m' o( P; v, Y* |2 @
and so on....
1 n5 g& m% r4 ?( @, A0 g! e: ]2 M6 t( J
[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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