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发表于 2012-11-13 08:48:12
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1判断语句8 o& P1 O: J4 b# [7 ]
if <condition> then
3 Z$ g: W1 p4 Y, C <statement sequence1>;
6 f O% T; |9 V0 A: f elseif <condition> then
O! S1 d( V; S- @& T6 i <statement sequence2>;
% R" o- |! ?2 E6 d9 \% _2 c else
* s; @, d2 [& o5 j& h <statement sequence3>;5 G& p! q6 D4 B( W
end;5 f- ~5 [1 _1 c8 d
如果分支比较多,用:* ?9 B# H7 O e) m; N
inspect <expression>
; p* [# b5 _5 F+ G7 M+ Y. R when <constant_list> then% g0 w* T3 s5 j( N5 R
<statement sequence1>;% F0 S2 m* W1 X8 [1 Y
when <constant_list> then$ P- P) ~$ }# J6 ^ j
<statement sequence2>;: h6 z0 y& Q8 S! T+ n3 g
...
6 o$ G) R8 Q; m: Q else
- O8 N: E" L; ^" Y- ?+ \ <statement sequence3>;+ l" |& |6 R* s* i, R
end;' g7 V0 {1 ]2 S* g" w. Q" A
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2循环语句8 A. x, A6 ^8 U$ J" d- i% D
(1) from <statement sequence1>1 x {, H- Q4 B/ S9 l
until <condition> loop
. D1 Y/ q9 v; s( K8 c <statement sequence2>;
0 [" [9 e7 _5 _8 x6 ? end;
' U6 D/ o! [- z0 O (2) while <condition> loop9 ^! X* g( y9 h& _! ^
<statement sequence1>;
5 f2 ?, j2 p- X end;" ]: P$ ^; v% H) j& D( l* r5 @
(3) repeat
% X9 c% N; K$ n; V. | <statement sequence1>;1 x: G V, i& A: T) ~4 q+ u
until <condition>;; t3 J' h* o' Q! c
(4) for <condition> to <condition> loop
8 u2 h# ^* Z! O <statement sequence1>;
% X# Z1 N* U3 d next;
8 K9 e9 F: q, H, I- P7 D3中断语句5 h1 `# g2 S0 w1 [
waituntil <condition> prio <integer expression>;
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8 x9 b) O; \) Y B$ W以上为常用的函数!
6 ?- a; j$ E6 v* O6 M3 v! A还有很多,如有需要我把资料发到你邮箱里 : D! {3 k/ X5 L
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