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发表于 2012-11-13 08:48:12
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1判断语句6 S: ~9 U4 o8 E2 w3 i
if <condition> then
1 |- z! L% q3 Z# S, J' U# I' c5 U1 V <statement sequence1>;3 I3 b! c9 F$ l
elseif <condition> then# `% V3 ]/ y+ Y& L1 k
<statement sequence2>;
4 S5 r0 D o( `8 @" G0 i# P0 l else
) c% i: Y8 _7 C4 F <statement sequence3>;4 L* K( r' w/ M% d9 G
end;
* [6 E9 R# e- a, y7 c如果分支比较多，用：
1 X w* C3 c3 @$ w0 v$ V; h3 b$ l inspect <expression>
. X* s' Q8 J- i% ~$ D when <constant_list> then& D \3 P* |9 L3 D( m/ l& e
<statement sequence1>;% D5 w, Y# M4 d% K* n) ]& N- _
when <constant_list> then
2 {& [* n! `1 e$ b, Z <statement sequence2>;
; C' n8 S/ e G8 w$ @% q ...
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<statement sequence3>;
+ D1 A1 d$ w9 u) W/ X4 }end;
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2循环语句
# |7 T+ X4 V4 Z5 h! W. I/ e+ t (1) from <statement sequence1>
2 Y! j) n; P* J' S7 O until <condition> loop% C4 T7 u% {2 ~ A8 B4 m7 c
<statement sequence2>;
9 B- o* e9 n2 ^* ~: b end;( [1 b; O9 g6 L9 c1 a
(2) while <condition> loop0 ?& z- ^3 _& M/ s- L0 w
<statement sequence1>;1 L, k. g& B0 B5 Y1 O9 w
end;
7 G$ O: H% m) e (3) repeat 5 ~8 R4 P/ C. {0 u( V* q) x: w9 k A
<statement sequence1>;7 G, o( |3 K# z: z: B' G8 @
until <condition>;
& F4 x; d7 t A+ g4 X O: v$ `: a (4) for <condition> to <condition> loop9 b% z& l% G5 m$ `9 p
<statement sequence1>;9 O# p' \- U: L4 d) ?6 ?6 Y
next;4 H7 ^7 h% w7 n7 C
3中断语句
% ]3 J M' `: x' r# P: J waituntil <condition> prio <integer expression>;/ F% D, V. M: \
) L4 h/ A2 a* O3 ?9 `% }
( [5 m- |! O* D/ }- y1 x. f以上为常用的函数！
4 z2 O# u- _) }5 ~/ m0 n还有很多，如有需要我把资料发到你邮箱里
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