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发表于 2012-11-13 08:48:12
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1判断语句$ ?: u! e8 b8 P. U3 I2 d7 z7 b% i
if <condition> then
( A4 o+ v. J/ [, y) U9 W0 | <statement sequence1>;
& W6 {6 K7 k8 r( y4 ?9 E; m$ d% s9 S elseif <condition> then
5 C& l2 I* V. B3 U5 j0 G0 s) g <statement sequence2>;
6 \9 r7 K7 n8 Y else 3 L$ W$ Z# h5 k+ W3 W6 `
<statement sequence3>;
" R5 ?" q+ Z; } end;4 R; S! N3 d! f
如果分支比较多，用：
5 y4 n4 R* ]2 j inspect <expression>
7 k y9 ?0 j. C# w- n4 D4 J3 w when <constant_list> then# h& D s+ R) D" B- k0 H
<statement sequence1>;3 [1 O$ E5 `5 z& B7 Q6 _) c
when <constant_list> then9 Z4 G6 Q, e1 \5 o! _7 L4 h* ~
<statement sequence2>;: `- b7 h! G( m- e8 g
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else
% ~* B$ d- k6 K3 _6 `* Q3 @( k8 L' R <statement sequence3>;
& y: R' P% ~5 q' @ Uend;1 D( w. O; v$ X( l: k# r) U
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2循环语句: V6 ]0 G9 m7 \( u G6 B$ |' z
(1) from <statement sequence1>2 c- O9 ]& Z5 W& x
until <condition> loop
" @# w4 p% c+ d4 _& U+ W; E' E <statement sequence2>;
4 b5 \# ?% \$ n" X5 ~5 E O end;1 M& U4 Y/ |5 s& i1 x
(2) while <condition> loop
. F$ j' c' N: T5 C/ W <statement sequence1>;
$ y u, ]2 F; @ e end;
+ F1 O% e: }7 m, g (3) repeat $ q8 C. o K- O
<statement sequence1>;
2 r7 I8 U: H! |' ]' ^' i7 ]! v$ Q until <condition>;* \# ]0 N% Q7 ^+ @0 ?) D( I
(4) for <condition> to <condition> loop
: O9 t0 B/ R( K6 v <statement sequence1>;
4 D w2 s' E5 U L' L next;% ^/ g6 W E' o% r- a9 l( L
3中断语句7 j: P3 E P+ Z4 q* `
waituntil <condition> prio <integer expression>;
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; J* ?' `/ u( u, r7 S以上为常用的函数！' v4 c G: k9 R0 P
还有很多，如有需要我把资料发到你邮箱里 8 s# B- H3 g' k; w5 {' q+ ]
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