|
 
- 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:
1 O7 X t6 r4 g; O& {% s# a- w有無人知點解?
; _& G. g8 j; D# g- k, i) n! V, xServer 的Backup Code?
1 G$ Q. W! A# e. [so funny, thanks a lot! 4 t1 |! q/ ]/ r5 c2 U+ ]3 U: v: s2 E: K8 v' x m2 Y
好簡單, ICQ 應該係 Visual C++ 寫的 , 而係 Visual C++ 入面
9 V* m( o- N& {Maximum value for a variable of type "unsigned int" 係 4294967295 (0xffffffff)
2 D% r% g6 L; M: m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)
/ \1 I$ T+ T- F: re.g.6 y5 b' Y; h, v. @' ?
0 + 4294967295 = 4294967295 (max) \1 l+ C, e8 I \0 V" k& {
1 + 4294967295 = 0 + 4294967296 = 0 (because of overflow)
' E( S: `& R, jand so on....
# T3 C, w; M, p% q0 O
# P. P; n( `9 z- C7 d[ Last edited by gaye on 2005-6-19 at 06:57 PM ] |
|