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发表于 2012-11-13 08:48:12
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1判断语句
l/ h! T- l8 f! a- Y5 q if <condition> then3 i a$ Q2 D( l2 S
<statement sequence1>;
9 B2 J: i' q3 G/ u7 l6 V! H! N elseif <condition> then
2 ~! ~$ f# d) I& _1 ~( W <statement sequence2>;
- x% Q h: b" ]2 H* r else
: n2 b' t. z' k" |( ~/ S <statement sequence3>;& d0 a5 k5 o5 H- g! f- _) j# Q* ]7 L3 W
end;
* ^ r: N: ^$ p& U; q# ~如果分支比较多，用：
9 \! B( p8 x. v inspect <expression>
+ S" M0 L( ^) B# r3 ^0 M when <constant_list> then; u5 W5 M( H- C/ L
<statement sequence1>;
( C5 r" E' Z0 j3 R+ ^* x when <constant_list> then t8 @9 i3 u* h* m! f
<statement sequence2>;5 D% x$ H! r1 k
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else1 _. e& x% i( |: T
<statement sequence3>;
6 w/ W' G% T7 S! Xend;1 \ E/ @, K- W! O
$ j4 v! R1 @3 H: W9 k+ w: c8 d2循环语句$ F+ r7 d4 S& E5 I. R/ @
(1) from <statement sequence1>6 l7 s4 n, |( y6 t$ p( }- _4 x
until <condition> loop
7 [" @; b* W4 ^% b j <statement sequence2>;& W- L8 g9 ]$ w2 z' {
end;
w/ k/ s" p8 w4 D (2) while <condition> loop; ^3 V3 i- D' }' [
<statement sequence1>;
2 Y; F. H$ q# l( e4 ~ end;
7 r5 H( U( u0 |* T (3) repeat ! a! m% {# R8 n6 p
<statement sequence1>;
% j/ |' R/ p% @% e- F until <condition>;3 K& @) V4 e }% H
(4) for <condition> to <condition> loop
$ z1 b2 A/ f) B <statement sequence1>;: @9 Y8 L$ }/ o6 x N: X! l) L
next;" l+ v8 L* D) N# Q6 z
3中断语句- u. j2 L* \* v6 H D7 z
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
* @& K. T2 s3 `8 ~$ |, e# \还有很多，如有需要我把资料发到你邮箱里 9 B+ ]9 M: N/ P# j5 R1 x
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