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发表于 2012-11-13 08:48:12
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1判断语句& D& q7 `+ c2 j, v
if <condition> then
) Q2 k4 _2 ~% o) @1 I& v, h% g! i <statement sequence1>;0 S, M4 |3 n/ A3 F+ O$ k
elseif <condition> then
]- o, R) ?5 w" u3 }* | <statement sequence2>;" c1 @5 W2 {2 V5 s( O4 L4 P
else 0 }: r: _, ^9 O0 K
<statement sequence3>;
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如果分支比较多，用：
l) `" Z; @" T/ X' X- ^ inspect <expression>
5 S) c0 c1 i- }' b when <constant_list> then& l, v) S6 d& y/ g; r* W4 T
<statement sequence1>;* T; Z5 d8 e8 |5 ?# _; e
when <constant_list> then
/ r9 v" Z5 w7 N! C" P" e <statement sequence2>;8 V v: m9 K0 }% y, Z1 d% G* _* |' i
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else
- V" r5 v5 R( J* R/ l <statement sequence3>;
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2循环语句- J) i) T: w4 e) A1 {7 R8 _) a
(1) from <statement sequence1>
+ J4 C- S$ p4 i5 X* Q- t1 c: Y2 Z until <condition> loop
$ p3 c9 T/ K) L* D" F& D <statement sequence2>;5 ?' b/ ?3 K t" c! k) P6 x" n) V
end;
5 ]9 Q# G. U) W- Z9 c0 v, ? (2) while <condition> loop6 N# {. `% ~* O& _) D+ i% V
<statement sequence1>;! d, k; x9 B, B& w, X3 J& T
end;
7 ?* E& H+ B" l k6 w3 ` (3) repeat
3 L4 x! U: f* t4 ] <statement sequence1>;9 M. S7 a+ P$ B& w
until <condition>;
2 j4 a2 e3 ~5 M* q; h$ L. _ (4) for <condition> to <condition> loop _9 G- \8 C- |
<statement sequence1>;
- [) ^' x% [8 w next;: T7 |4 z% S' ]6 F9 Z; T
3中断语句0 T8 j& p: D% b( K0 @; E
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
2 ^! z5 {/ s7 T+ D3 b5 e1 B3 r5 ~还有很多，如有需要我把资料发到你邮箱里
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