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发表于 2012-11-13 08:48:12
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1判断语句; Y$ n- j9 H) P3 h5 i. L6 z$ ]. h/ J
if <condition> then& f. @% W- e! U) v8 o# y% z
<statement sequence1>;
* e) i z: m# l9 i elseif <condition> then% p8 U5 Q; |4 [' x/ I" G
<statement sequence2>; {3 M8 {. ?& ^. t: `0 C
else ! A+ |6 d- v' }9 r" G
<statement sequence3>;; s% Z- i5 J5 ?% Q
end;7 p; {3 l; e) ?
如果分支比较多，用：8 @9 u# g) ^! ~0 r! w, x" B
inspect <expression>
6 I1 N" O$ G0 z4 q* G5 V when <constant_list> then
' l3 H" r, m. K/ L. f0 V. X8 J- c <statement sequence1>;
: h- Y/ {4 d- ~+ R! @ when <constant_list> then3 ^( v) a' G7 E
<statement sequence2>;
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else
4 @' s( Z* G' S% J |4 O8 f8 ?% u <statement sequence3>;
7 m# v" |9 Z5 ~* K- R* Oend;# [) I1 ~ r# q8 Q, g3 h8 G7 v
, p* U( F7 R2 ~2 \% H2循环语句
% f* B8 _8 x9 @ z( ?/ Q7 ^) g (1) from <statement sequence1> X% k/ A6 J7 E( b" m
until <condition> loop
' _7 Z% }# v9 ]/ w: _$ `" |- O1 E <statement sequence2>;
9 [8 P" f. O9 V& X' i& l end;
- O3 l5 q+ I* g3 y2 H (2) while <condition> loop
/ S; |# K) r- D2 n <statement sequence1>;
3 R& g B+ O* Y end;$ J7 G0 w( n7 H) [# f U; H
(3) repeat ! B' i# H8 ]4 B7 A8 Z# @( C
<statement sequence1>;
$ m6 v, H. ^0 k/ X6 a4 X' T" W until <condition>;
2 P7 e4 Z! z" ]" W7 [ (4) for <condition> to <condition> loop! d" h/ d# N) s+ @, a
<statement sequence1>;
& L! X# W! @5 J8 E+ h% f2 \ next;
6 X0 v: s5 [& O+ L) O3中断语句/ F/ E& _) m1 x' e% w
waituntil <condition> prio <integer expression>;
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{0 \/ X( R( q: ~. Q/ ~; c- H! j; s" @2 T. d B# |+ i
以上为常用的函数！
. N. ^! K/ d6 h# p' }) z1 {还有很多，如有需要我把资料发到你邮箱里
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