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发表于 2012-11-13 08:48:12
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1判断语句/ K0 d1 M+ q7 a- q; c, |
if <condition> then
6 J. h) n: I v <statement sequence1>;5 ^8 }+ v' s: I" X+ f
elseif <condition> then2 `# z# C- \2 v& T; W9 { p
<statement sequence2>;' e1 [' Y5 |& k* s' H% Z9 v
else * ]5 a& A; y G! @0 _( l
<statement sequence3>;
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如果分支比较多，用：7 S0 A% u4 m6 B6 \ w
inspect <expression>
5 B# a R& Z" q; Q6 ] when <constant_list> then
2 s9 O2 Q9 a/ c) j v <statement sequence1>;
+ H7 }8 B9 O4 @' J when <constant_list> then
% ?( x% y( w) _ L- B/ p <statement sequence2>;# o/ a& s( g7 ^. D: l9 o% R G
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else' I+ J% R( ~& ^
<statement sequence3>;
% W( ?: o: T5 t Dend;
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5 r+ e+ s" I- W B$ B3 T. z1 G( M2循环语句8 C' m. w( ~7 u- Q$ l' |
(1) from <statement sequence1>3 P+ R5 P+ O3 B; u v; l
until <condition> loop
) @% `3 w% k: t6 G1 Z( ]7 g <statement sequence2>;
8 q% V( {8 s) r4 N8 j end;
, O8 o+ O% F3 j ? (2) while <condition> loop
# f. d- b$ ^% d2 M. M <statement sequence1>;
5 L% M {! k$ o6 m* } end;7 l5 E4 T( {& ^0 G/ d
(3) repeat . u$ m' b* D- a. {% j* @- ` Q
<statement sequence1>;( l% n, u2 G- E2 _0 F3 D
until <condition>;
7 a4 T; s, H, p* ~+ G" f (4) for <condition> to <condition> loop
* V. z; p6 Z$ k" I3 G" E0 M% q <statement sequence1>;
% h; L# @1 ~ h1 L' Z1 C next;8 e7 v7 o* U& Z5 g" E7 r
3中断语句
) ]! G9 h" f- f9 z waituntil <condition> prio <integer expression>;3 g+ G0 y, B5 P) \5 G3 S( t& ?
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以上为常用的函数！3 n1 E( y9 Y* }7 s3 e+ V* D
还有很多，如有需要我把资料发到你邮箱里 & a/ k9 c0 s7 b% ?* I
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