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发表于 2012-11-13 08:48:12
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1判断语句% o9 R4 S1 W- m4 Z, v
if <condition> then
/ C0 W1 h: ]1 @2 s( f, { <statement sequence1>;
2 t ?6 A! Q/ `9 |+ D+ A6 } elseif <condition> then
8 u- N2 T' Z' N: ]/ \& {) `' ~ <statement sequence2>;+ q6 {4 Y( f4 m% z. P7 J: l
else 6 a9 ^( D3 @# Q0 \0 K: R* }
<statement sequence3>;/ i. X& U3 A' @3 \7 r+ H& X
end;
" M {: E, o6 g' n# A5 d5 D如果分支比较多,用:, ^3 F- u- g$ p
inspect <expression>
3 a- K: q% U+ O: J4 _' W% _- ?1 ]: r when <constant_list> then
2 e0 N- n: b: {5 K/ V( K <statement sequence1>;
t! T1 C: z( F8 n) o! d when <constant_list> then
2 m9 h) |- }5 @0 M! r; o <statement sequence2>;
' d" M$ E5 D- s5 q3 _" M l ...
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<statement sequence3>;
$ R! @% j7 K! z' q* xend;1 M5 Q1 e0 j3 q! `2 Y9 o
: h1 _ p) a3 X. u u/ c2循环语句
2 D* @4 u! C9 G2 L! W5 D (1) from <statement sequence1>; [. a( Y) N" K2 d) F3 x4 S
until <condition> loop
* i/ i4 n0 v) o0 e" p8 b8 L; _ <statement sequence2>;( A! K5 W; I% q$ {$ r9 u7 S
end;
7 [; {/ c/ k$ T( ~3 ` (2) while <condition> loop
i9 K' U* j; M2 M; E <statement sequence1>;) Q" L* n \5 p- b, k8 ]: `
end;
5 o# Q5 ]1 Y/ P3 L, W2 J (3) repeat
6 L9 d3 q5 I- [+ h <statement sequence1>;' Q( C. Y, ?6 ^8 p9 j) l
until <condition>;" W% L, P9 u) m( Z+ ^' E1 Y7 c
(4) for <condition> to <condition> loop
: d1 _7 c @; U <statement sequence1>;: L4 g; U& j/ c8 z8 |/ v, z) {
next;5 o! U4 R* K# m9 |
3中断语句) C, S3 }# `6 J3 Q1 w5 P
waituntil <condition> prio <integer expression>;4 n v- Y# P4 [6 a
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以上为常用的函数!! ]% ^" g( M/ q- j/ G8 J/ e
还有很多,如有需要我把资料发到你邮箱里 * W, K2 ~+ [& `: P% k+ T
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