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发表于 2012-11-13 08:48:12
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1判断语句
7 e m5 }# @! g8 g" _ if <condition> then
4 J d! C- {3 {2 i <statement sequence1>;
" n: d0 b$ J) Q! T C1 f/ G: ]- \ elseif <condition> then
- ?$ x' c' S x" P* V$ ~+ w$ T4 l <statement sequence2>;* C( D( ^/ B/ o4 x: I) e+ Y
else 7 k1 Q' M4 ]* x' l
<statement sequence3>;
+ y L, ?: [- U% H. j: l end;6 x. o/ X3 G- g! F0 x9 O! A+ g
如果分支比较多，用：- \( w# |+ r5 E! j7 j( [. D/ g
inspect <expression>
. q9 P0 @# t+ Z% A when <constant_list> then" j9 P* P- K: Q/ Z6 w6 I8 u
<statement sequence1>;6 K; P- u7 e- \/ A( m! f! m0 c" S
when <constant_list> then
1 E1 G2 d* r' a9 E <statement sequence2>;
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else) q; G+ {) M; w: o( _
<statement sequence3>;
/ @# K& G, I: Eend; }9 t) w, U0 O" L8 B+ W9 n
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2循环语句% P7 k% _9 ?! ~$ c
(1) from <statement sequence1>, B1 r$ n O4 P2 t# Q9 r
until <condition> loop
t6 S, h2 C# Z# N4 i2 `$ {% I <statement sequence2>;/ V1 t* g( r9 s- A/ ~. @
end;: q# c3 L7 U5 c
(2) while <condition> loop Q' }1 ]8 h, p( L t+ k7 f' l: A
<statement sequence1>;$ j3 r, D* @, Z3 t! F
end;" v" w. M; Z$ L5 ^( Z' M' x
(3) repeat 5 ]) V% ^; }9 c1 _1 E4 G/ Z
<statement sequence1>;
1 l( T! `6 P! M* c% y# V$ d' } until <condition>;1 Z" q6 v* h$ [5 I
(4) for <condition> to <condition> loop, E/ h }( P! k7 E7 z4 d% Z! s
<statement sequence1>;
( {& _; f* N$ ~ next;5 B6 |' Z; d/ p; i6 H
3中断语句
: s- q9 A& M+ V* y" w$ y waituntil <condition> prio <integer expression>;
5 g: x7 o3 q9 `: E' r, J$ _8 `" e
) V, v% y8 ~! o# X& r- N以上为常用的函数！
t- L* m) r. d' N# W, R还有很多，如有需要我把资料发到你邮箱里 : ~% `! g( C8 ]( n# @; d
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