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发表于 2012-11-13 08:48:12
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1判断语句
9 T) c9 n7 r: E, s9 B Q8 K if <condition> then
2 U! T7 W( X7 v2 P" t7 N <statement sequence1>;& L! g% p2 e7 p: [9 d
elseif <condition> then- u- ]$ v) l( |" s
<statement sequence2>;" A {/ i: s7 A
else * `' r: ^& q5 D& L$ D/ }% H$ B
<statement sequence3>;
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如果分支比较多，用：
) I* @# |, L9 ?& t- g6 F" j inspect <expression>
3 t$ \8 N# v5 [- | when <constant_list> then; x8 P: s; J1 |6 \! K- ?3 K
<statement sequence1>;
+ b4 r8 V7 `, e- v7 S& Z7 R$ Z when <constant_list> then' I3 @5 J |4 W
<statement sequence2>;! A" G+ P& V0 z% N# |5 O
...
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<statement sequence3>;) S$ g) \( W. ?; d1 |0 l
end;
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2循环语句& d" ^) I9 j% v3 W4 e' W
(1) from <statement sequence1>: I j0 v( d& E9 j" x
until <condition> loop
/ p8 j0 D* h4 Y <statement sequence2>;
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(2) while <condition> loop
2 ]3 [2 L- ~4 [7 b* q9 r <statement sequence1>;' B5 Z/ k$ ]# z2 p& \; c0 K
end;
* s1 p: h9 H$ V/ J7 t" O (3) repeat 0 S* t$ m, H3 L3 o' p; d1 m" S
<statement sequence1>; M) H8 o4 r7 g$ ]9 r/ r6 P* m
until <condition>;& P) ^/ c2 D% H& c" W) v/ v' E- A
(4) for <condition> to <condition> loop& Q6 L) n$ d# G6 J/ G
<statement sequence1>;* d# T: W% \9 {% G1 C$ U
next;. o. n" i9 ]% k* A! Z9 m; j0 W
3中断语句
4 \; |8 E |: M waituntil <condition> prio <integer expression>;
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; K; L4 D: _; o以上为常用的函数！: R) x% s2 B! w
还有很多，如有需要我把资料发到你邮箱里 0 n! c/ [4 f; E! P2 ^+ D
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