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发表于 2012-11-13 08:48:12
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1判断语句( J, ?9 v" S& n/ H! X& k- d' Q
if <condition> then* S* f9 Z X# `
<statement sequence1>;+ ^5 O. y6 _. w* r$ @/ S
elseif <condition> then2 q' o) ^' w' }* S3 k# _: \3 l2 T1 P8 g
<statement sequence2>;
5 \ U0 G8 u; n) `% F else 2 u3 O) u) }8 e: {' p! P" F
<statement sequence3>;
3 Q' x3 `! E1 c' K& Q/ B/ e end;
/ ~6 D7 S6 e# G5 @& F" W& R如果分支比较多，用：$ m, e- Z: T9 ~4 @2 G$ [. e
inspect <expression>
# d' P9 }- B! D- y. _/ e when <constant_list> then' D# @, y$ F! ^
<statement sequence1>;
2 B. G# Y* u! z# X3 @ when <constant_list> then
6 M8 r9 j5 P& U4 B- f+ j/ F <statement sequence2>;
% B& c# T9 I7 E" P# I3 \; I1 t ...
% {3 ?& R* _5 Y4 M, o8 ^ else
7 N6 Z: Q) W0 b" m) H6 l <statement sequence3>;
* ^* ]% ]3 p4 r$ \; uend;& | p& h- }' w3 |7 r8 v
. }( t! X9 ?+ _' Q) {2循环语句+ W; z5 c9 l0 f, D2 }3 m1 `- E
(1) from <statement sequence1>
4 ?9 L1 F: P. U I8 L" H until <condition> loop
3 H+ i5 d# T/ r" `9 K$ f <statement sequence2>;" C" o/ |* o+ t n" |
end;
/ q* `: T/ R/ l; R6 a4 w6 n) O2 B (2) while <condition> loop1 J9 |- X' |4 f# l
<statement sequence1>;# i! D8 a1 e" J. L
end;
: W$ u9 e% L# L (3) repeat 9 q% }( B2 T/ f* f/ L4 H9 Z
<statement sequence1>;
5 z! S1 v- _' }+ Z; J until <condition>;
1 q1 X5 J9 {/ m7 ^7 F (4) for <condition> to <condition> loop
8 J3 b& |) N0 {& l" r1 C8 P <statement sequence1>;6 d! |' n* U0 H
next;. ~8 Y- ~/ d0 I( D7 y% v1 m
3中断语句$ b" `5 o" o3 z4 Q& D
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
- R$ H3 K# z, u( ~! o% m/ e5 L还有很多，如有需要我把资料发到你邮箱里
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