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发表于 2012-11-13 08:48:12
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1判断语句
. o$ F" k# p4 i if <condition> then* p, |0 k- B2 V5 V: P ^9 Y
<statement sequence1>;, b4 D& [& c+ n
elseif <condition> then
- H& k1 e9 i+ G# w( A/ \8 P7 _ <statement sequence2>;& {! w7 F- f \- Z5 _
else 1 u2 E) l% m0 h3 ~* k* J) q, q
<statement sequence3>;
r0 k z# v" d4 M+ |. B end;: Q9 R( P* _& }) z4 F5 {
如果分支比较多，用：
7 A2 ^1 d# d3 z5 b' P D6 d inspect <expression>
# M9 ?) E& c7 P. q% q# \ when <constant_list> then
k" B( G9 I0 i: t <statement sequence1>;+ H0 W& \/ n B3 b
when <constant_list> then
7 d; @ |& w) @& L# e j( b" m <statement sequence2>;9 p7 z5 K' Y2 }4 f3 ` I# r
...
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<statement sequence3>;* Y( R5 J$ H6 D, M7 ^* K
end;; p; G0 m2 {: K+ @4 ?2 B) B6 f
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2循环语句# X( [ k J7 L e
(1) from <statement sequence1>9 V. C' r( k1 u0 `: X$ g2 {
until <condition> loop
' `3 `: v1 }: C# `( g6 I <statement sequence2>;3 s U& v! s# \- R2 { L! {
end;
$ h8 K9 x4 r; \' Q( |" U8 w8 `" v (2) while <condition> loop
; Q) ] ~6 q7 u: {& h <statement sequence1>;
y- u3 l [& d) O) y end;
% R+ f! R( e) F* x) m0 Z, h* p( \ (3) repeat
+ @# s0 J& L1 E; `% j' v <statement sequence1>;0 n# ]7 l9 N' ]2 V
until <condition>;& W0 Y+ J% }, ^( Z; \$ S
(4) for <condition> to <condition> loop; w9 s! }8 [7 A a
<statement sequence1>;# e" d( v8 B( l, y S8 ^
next;' p. Q* @: D# ~- I! l5 V
3中断语句
- y( L( \$ I% _. t waituntil <condition> prio <integer expression>;+ R' u$ V* l! t# Y& l& n
" ^0 p1 s. S( @. l! F- S* ^' Z% J2 w$ w1 j/ O O }
以上为常用的函数！
3 V8 F! s; I( J7 O2 U; x还有很多，如有需要我把资料发到你邮箱里 # R8 U0 a% s) F+ C0 E' a2 ~ o
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