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发表于 2012-11-13 08:48:12
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1判断语句
% i% v8 g+ i" j9 A' q3 Y if <condition> then
. A+ i5 ]9 j4 r <statement sequence1>;9 _# {# E# B/ g& a6 @- ? E
elseif <condition> then+ X: C; _- g. P5 c
<statement sequence2>;
! T. ?1 A) G, [ else
+ P" t; _" W6 K <statement sequence3>;, k8 g9 v5 k& u8 z, B: B, j& z
end;
4 E, X: @ D. r4 R如果分支比较多，用：
6 k! Q6 H s% ~9 M+ W inspect <expression>. R6 h9 |8 l6 r. Q7 o. m6 q9 |
when <constant_list> then
t# n' Q0 D9 x <statement sequence1>;; ]4 R" J- W: j3 H
when <constant_list> then
; }2 J" f( E5 M( d <statement sequence2>;7 d0 l; L& ]5 f, E# i/ `, u) Q
...# N! I# u' U0 q
else
# q u$ N8 M6 C. a+ t <statement sequence3>;
- E N. }* r5 G6 Nend;& s) ?% w, _6 _. q
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2循环语句
$ L( l6 q) ^& t& [4 f (1) from <statement sequence1>- \. q8 i7 g- |3 o( t( O) Y4 K, x! d
until <condition> loop6 ^! b6 o( }& |2 [
<statement sequence2>;
0 c. z2 E* _ l' ?4 a8 ]1 O7 X end;
1 u% F& g0 ^ k7 O! h3 ~/ u1 C (2) while <condition> loop
3 I; h5 ~% |8 |- o+ {" ?2 D/ E <statement sequence1>;0 g/ @( L6 Z" p w/ L6 p
end;0 H/ E# L* {2 V# F. }3 {
(3) repeat 5 ]& }8 D+ D) m/ G) V
<statement sequence1>;& `) X4 U7 r5 m% W
until <condition>;
7 o+ S- u4 K/ z. o8 u0 \ (4) for <condition> to <condition> loop# E# b1 O% K! f) i# o! `/ U
<statement sequence1>;" \$ E" G* u8 @- M# t, V
next;9 H7 H% `& b; o7 i4 @4 s$ u
3中断语句: }0 i1 N! ~8 g% y* r
waituntil <condition> prio <integer expression>;2 D! r- o5 k/ I' @; N, G
p* ]( d- v, Q% Z, z$ X
& f: M2 J7 f% f9 g' I
以上为常用的函数！
L3 i; F$ R' m# M6 B; U还有很多，如有需要我把资料发到你邮箱里 # @6 Q j7 h4 U+ |7 o
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