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发表于 2012-11-13 08:48:12
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1判断语句. k3 M* A0 {2 e6 _) g- ?
if <condition> then( q( W l3 X4 S! w' O
<statement sequence1>;
; G$ n, E K6 R @ elseif <condition> then
0 H4 g, p" }& y" B* B O1 y. H) D- @" e: H <statement sequence2>;$ V( D. t* q) R4 h1 _9 I9 q c# H
else + B0 B( v: O* T2 N6 A! u/ p# E1 B5 f
<statement sequence3>;* o7 s1 }& k9 j O8 C, c0 q. Z
end;7 n9 Y3 Y* \% R2 [1 k B
如果分支比较多，用：
: A7 W/ `) Q% q: h inspect <expression>
0 U7 v$ o+ u: A. g# d. \ when <constant_list> then
1 B' a4 z% C2 j9 H <statement sequence1>;
5 u# Z! L9 E& k9 A when <constant_list> then s8 t+ E! a$ z" i4 g
<statement sequence2>;
4 p( B" H& s# L$ a; o x3 H4 V ...
. _" M, c& V4 K; L7 C: Q else- k4 i8 P3 f- O" K5 Q8 y
<statement sequence3>;9 ~9 v8 j1 n7 v3 R
end;
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2循环语句
$ p6 a! B4 \: Q# w9 J (1) from <statement sequence1>- q9 F& y. Z/ l3 c* S6 K6 I
until <condition> loop* ^7 `8 k$ @# L# Y
<statement sequence2>;
: g& r' {$ U7 Y4 v) I% i' o$ ~5 X end;
1 F# B. }1 Q+ h( r1 R" i* n (2) while <condition> loop
, h" X3 f8 R" m7 k R <statement sequence1>;
: c& i8 K: V) Q9 ] l) ^1 N end;
/ i- J+ s/ r6 y (3) repeat " V4 N3 P4 `% ]0 f
<statement sequence1>;; x) R$ f0 n! }- O0 D$ d
until <condition>;, |! t6 ?* G8 F1 w
(4) for <condition> to <condition> loop
/ d# A; i9 L, {. E7 k <statement sequence1>;
* M4 W8 L5 G' t. S, D( w. Q next;4 q( n$ c' r ]1 e, I4 U$ t
3中断语句
6 l/ O. v# V0 s9 e( v+ T9 q waituntil <condition> prio <integer expression>;
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以上为常用的函数！ n& C' i4 w6 C0 ~5 J
还有很多，如有需要我把资料发到你邮箱里
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