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发表于 2012-11-13 08:48:12
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1判断语句
# s% A7 @' r5 W1 e0 | if <condition> then5 N2 J; }9 r* k
<statement sequence1>;
& \; ?5 W5 g& s elseif <condition> then
8 j u9 X: x2 m8 N0 p% a <statement sequence2>;
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<statement sequence3>;
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如果分支比较多，用： L! U. }- E f. `) h& r
inspect <expression>3 V/ D. g7 k# ]$ }. C- R r
when <constant_list> then
2 Z; P- C3 X6 L2 K <statement sequence1>;
, @% l$ q, i$ x$ Y; f when <constant_list> then" a% u; C" b: q2 K
<statement sequence2>;
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else
3 _% G2 R! U- e! i ^; n+ N <statement sequence3>;
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: P; F; q* p) t7 ^- C7 T. M9 G# g' a2循环语句6 m6 N w9 ?; m8 Q9 I' J( R
(1) from <statement sequence1>6 C" d$ [( [6 \; x. e0 I
until <condition> loop
0 \5 s, \6 n* i5 K <statement sequence2>;
/ ]/ S5 e' s+ O0 D m% b3 ^- N# e end;
1 o! [4 x% n G5 `& s+ U) k (2) while <condition> loop
, b! t8 A8 i4 p <statement sequence1>;. p- d9 h7 ~9 l/ h3 C* Y/ S
end;. A5 F( j R3 H7 V5 w( H
(3) repeat 9 h: F7 G, J: e! L
<statement sequence1>;
7 Y$ C. |4 X, m( K3 d+ ]9 S until <condition>;
9 S/ L: k2 h+ z$ K (4) for <condition> to <condition> loop+ u' y' _; A% P, w* `* t
<statement sequence1>;, Q8 ~: o" i0 K* M3 ~
next;3 g! g9 z2 d% v& [' N- s9 T' {/ |
3中断语句* T/ I- W2 b3 D3 S
waituntil <condition> prio <integer expression>;
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以上为常用的函数！8 |+ f8 m" f2 Q3 |
还有很多，如有需要我把资料发到你邮箱里
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