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发表于 2012-11-13 08:48:12
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1判断语句4 {3 {$ K6 ?9 l: S* o) H4 x
if <condition> then! ^+ e0 T' T/ q' S7 p' L
<statement sequence1>;. w, a" S" A9 o6 \; y) v5 P, {2 x
elseif <condition> then) p2 b' q3 Z! B7 a
<statement sequence2>;
6 y- i% P$ O0 q {* d8 c) E else ) L7 `" p: q2 C8 K
<statement sequence3>;/ {1 o+ r4 |* a
end;
3 U0 L/ Z: L5 n: W# ?- T" N如果分支比较多，用：
2 [# k* F: e( q inspect <expression>
7 Q2 B, s M9 `( j4 N# T# \9 ? when <constant_list> then% t' l2 x r& k' B" U
<statement sequence1>;
3 c0 }9 |) ^8 R A$ N6 G \+ ] when <constant_list> then
h7 L' n2 P$ k0 d <statement sequence2>;
q8 h! S- W! M, b5 t# r2 [% b ...
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<statement sequence3>;7 O$ T+ d# Y B
end;" D; h$ D7 M' T9 n+ W8 x# F
/ V# T0 m& s. A/ e& l2循环语句
, f* ^) C% V1 Q: { (1) from <statement sequence1>
1 [& ?' E3 \7 s# m) ]* [: c until <condition> loop
+ v9 C5 G3 d6 T0 r <statement sequence2>;
: [( i& g- M, w3 S5 G end;6 |* A# F3 f2 G Q
(2) while <condition> loop6 r0 `8 g) l) r! s
<statement sequence1>;
6 Z- a$ v6 m% Z' n" Q end;
, k5 Y1 e7 ]1 ? (3) repeat
* Z& K6 P1 C/ G. c) s <statement sequence1>;
2 [; }% q' d4 d. a% F until <condition>;
- E9 ?2 L3 Q! x! X, z( v (4) for <condition> to <condition> loop, Z7 _6 U N/ ]! ^2 L( G
<statement sequence1>;
& D! _/ S/ \- i4 E6 V next;
- R; u. g( W9 I, k8 Q: _2 c# O3 J3中断语句( p0 ~. N$ ~% a: z, G1 }
waituntil <condition> prio <integer expression>;
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以上为常用的函数！1 V6 m! ?# R2 o3 h( {
还有很多，如有需要我把资料发到你邮箱里 % `' L& ]" M& M" `
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