gaye

Originally posted by secretfj at 2005-6-19 06:37 PM:
$ c/ r3 P3 h  y6 U2 e$ _有無人知點解?/ `0 {7 h( X3 J  Z: W' ]
Server 的Backup Code?
. O7 K, @2 u" _5 `$ _so funny, thanks a lot!

% h/ J  P* Y" a
4 ^$ q, `0 ^6 j: M! o! e4 y- p
好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面
* X$ m# I& d+ F5 \# cMaximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) " x3 u9 o0 o# S& v. }5 I
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)
4 ^7 W) F4 O2 Y) ]- ]! U% A# T# Re.g.+ M1 H* d/ f: d! w6 E
0 + 4294967295 = 4294967295 (max)3 y8 V7 C( p, Z* F
1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow); m2 b' g  `+ D
and so on....
. H# c) i" [; Y
4 r& s# C) o3 n8 i, Q# X7 V" @, D0 L$ i[ Last edited by gaye on 2005-6-19 at 06:57 PM ]

gaye

Originally posted by crap at 2005-6-19 07:14 PM:( r" T9 I! t5 v/ K0 z* P; i4 C
( m1 m# e7 Y6 I

4 M8 y- V3 f2 @8 i嘩

- B. k& n/ i: V% s1 q7 A. d) `' H

- V- [' h+ v7 j' J小弟都係比較多睇電腦雜誌