gaye

Originally posted by secretfj at 2005-6-19 06:37 PM:
& s$ b/ v9 p8 @, J2 g) Z: f有無人知點解?5 C; }) l4 j9 B, ~
Server 的Backup Code?. F; u5 B3 U* Y9 d, _( J9 @5 i: F
so funny, thanks a lot!

7 X! ~) W# E  E& A6 b3 A4 k
' }  j3 @* ~. V; _1 \2 ?7 g
好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面
% a3 I, ]6 o% J6 A( ?3 _; aMaximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) $ q% B3 v  m6 O) y0 l( G
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)
" [' n0 s0 k0 e: h% ze.g.! B+ O, b4 f. A. X" @0 H$ \. K% f* |2 U, L
0 + 4294967295 = 4294967295 (max)
( g9 I# W8 n7 W& l6 M) G1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)
7 x  `3 |8 X  r8 W- Aand so on....7 q2 w) D- `7 B: E+ D5 }3 ~

9 Y6 k( N0 d, w; m[ Last edited by gaye on 2005-6-19 at 06:57 PM ]

gaye

Originally posted by crap at 2005-6-19 07:14 PM:% H* r! S$ X: {9 i% f/ S
# o) ~) B- @% x1 q9 ~/ i

' R. o' H7 b0 J* I. `! R嘩

- ?; f' V, N; B
8 ]+ k+ I( f, P: }
小弟都係比較多睇電腦雜誌