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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句" v3 w- C& N3 g4 y! T
if <condition> then8 o t; L& r5 m- c
<statement sequence1>;
6 } P% n) i0 A& I elseif <condition> then
S. J" Q4 P* k# p. t: l <statement sequence2>;
$ [# N" J: [7 F$ X4 v3 |/ q' n else
- Y, ~' [6 z# J7 X; }9 [ <statement sequence3>;5 s" R* @: n/ R) P0 {+ z
end;# d& ^* M9 f( @! d Q# _
如果分支比较多，用：
) W, C/ K" }2 N* R( J4 ?0 W inspect <expression>* Z* F& r, |6 b/ k R4 d
when <constant_list> then5 o& w6 y1 [1 U# s' S1 e
<statement sequence1>;
' J; Q5 }' r& \: S when <constant_list> then0 y. ?/ ?; P& d: J1 [/ J, Y
<statement sequence2>;5 Z# D9 J+ `4 l
...
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<statement sequence3>;9 l$ F, f, d" P0 W! g6 \
end;
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2循环语句9 A9 q3 W2 x; N$ A
(1) from <statement sequence1>
, \: I$ @' g! r: k0 P: M( K until <condition> loop' I; ^6 L$ T8 G
<statement sequence2>;+ y& G$ Y0 u X3 U
end;
, A$ o# |$ ~% v% R (2) while <condition> loop
; K" b9 q9 Y" F. b <statement sequence1>;
2 X1 A2 ?# g: ]* f; v3 r end;
% @/ ~" @& E* W9 G" d! \! W (3) repeat
- G' [8 A% D8 b <statement sequence1>;* M$ ]' t6 j& I+ i- l8 I1 v3 y7 U
until <condition>;. E$ g/ i, s) P0 E& ~
(4) for <condition> to <condition> loop
3 a0 s F( A; u8 t& e <statement sequence1>;4 Q; J2 `* j/ q8 S
next;
3 n0 ~# z8 X/ B3中断语句! V+ w F( x$ [: Y
waituntil <condition> prio <integer expression>;' D. k1 @# y! l; S
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/ p. W7 Y6 Y0 O$ O2 t0 c以上为常用的函数！9 V8 ?* l1 l+ f
还有很多，如有需要我把资料发到你邮箱里 4 @4 G+ ?- K# Y1 Y
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