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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:
" y W: f, X9 a5 g有無人知點解?2 F( x/ u+ f$ |+ u
Server 的Backup Code?
: M5 k& F' @, y _so funny, thanks a lot! , Q0 o5 b# M0 Y- U4 c E
# k# d" q [$ t" ?好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面+ U C r. o- J4 \
Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) 2 W* V' D& y, O+ z/ @
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)
3 B" R V4 t# W1 J+ H: Ye.g.5 r5 v k/ C0 r w9 D5 I! d( {
0 + 4294967295 = 4294967295 (max)
' p+ ^+ M5 K& n. j1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)
6 v( ?5 m Q0 Kand so on....
! g5 o3 _1 Q, a, P' k9 }+ {+ A
[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
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