 
- 帖子
- 362
- 精華
- 0
- 威望
- 126
- 魅力
- 0
- 讚好
- 0
- 性別
- 男
|
3#
發表於 2005-6-19 06:50 PM
| 只看該作者
Originally posted by secretfj at 2005-6-19 06:37 PM:
! p; h+ ]' x& r; [0 g有無人知點解?8 {5 z- W$ E4 J/ s0 ], G
Server 的Backup Code?) `( \$ G7 T1 p6 ?1 R
so funny, thanks a lot! % |8 y' Q6 c, }5 w$ u- H6 k; d- B
+ L1 e6 F5 V! o' ~好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面* l4 r, l8 X2 M0 p% O6 k
Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff) 7 @7 [; D* m# Y7 B( Z5 {
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)
# X6 l2 P# W! J& X0 i7 B' a; Ye.g.
4 E; ^. v$ s* U0 + 4294967295 = 4294967295 (max)! U2 ^# L! s$ R& _& c& B- D( t
1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)6 Y. _1 Z$ W1 @$ C8 h$ P
and so on....3 Y$ z- s6 f3 b
- Q' t9 x0 i. c; G3 B9 V# b* R1 @[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
|