gaye

Originally posted by secretfj at 2005-6-19 06:37 PM:
! Q" ]6 A& }. Q6 j+ u' T/ ]有無人知點解?
5 r3 Z7 ]" B4 K6 fServer 的Backup Code?
  h# A3 L' w* \7 y; D+ j& O: Sso funny, thanks a lot!

$ T' M  P- q4 v

& n+ {, ?9 ^8 E! G# y好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面' C7 t3 J4 K* f- c% u$ K9 z
Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) 5 p, _2 s1 ^- r7 u; H
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)! i. O9 Q  h) j. y4 L2 f1 l9 p
e.g.9 b* M+ o7 r( L& a3 n0 F& O
0 + 4294967295 = 4294967295 (max)
* _/ ?) Q4 q4 }, r+ l4 h1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)
& J2 o, x9 j# X4 `and so on....
  g' l! w7 o" n3 A. _, W, e1 A1 y- W! j3 N3 T) |
[ 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% z3 |/ T# S

* U/ Q- y" I: Y% D9 Y" `
) u. i& {2 P- p9 m! Q嘩

( M) ^" H2 _0 b8 R2 i) j4 t
; W, C3 g  I; m* Y9 n( r小弟都係比較多睇電腦雜誌