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发表于 2012-11-13 08:48:12
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1判断语句, T+ }+ l {: m: |7 [2 O. X( v
if <condition> then
% c. b7 Z t: z3 k <statement sequence1>;
8 r& X; \9 h$ l+ ~* o: n& y elseif <condition> then; _ S% L6 i$ y
<statement sequence2>;' `) i# E- {" ]7 \/ ^/ R* O# u# Z
else
/ R( g( I4 J; V8 ~$ a9 }/ g <statement sequence3>;
+ p j+ M8 e* w) E end;% ^" I0 M8 N+ i7 S: [
如果分支比较多，用：
3 J7 E0 j# z | inspect <expression>
" A* O) m* A" {- O, H M when <constant_list> then+ A! x( |) y4 o0 |8 E# V
<statement sequence1>;
$ }' Y! i$ e, A when <constant_list> then% q4 i2 n" j! S/ l: P" R6 O2 }
<statement sequence2>;
* |! s5 t% i9 U8 T9 c: r: a6 s ...) p; I4 `+ F9 ]# v; h* {
else
3 f" T# q. m# l5 W* I- D! T <statement sequence3>;# o6 j! q' ]3 [) [1 Q6 P
end;
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9 Y1 e7 N3 P: X9 x! e4 f( C2循环语句
0 b9 t; {7 K3 y5 D' S3 }+ M- j (1) from <statement sequence1>; L. |& A, l0 t- S7 k
until <condition> loop
- k3 F* \0 T; \! ? <statement sequence2>;3 M5 f& s" ~9 W; T8 W X
end;( c e. B+ o# [- X
(2) while <condition> loop
1 i6 G- C3 V& C' W0 h! d" r <statement sequence1>;
7 @7 t( n% `# h1 V0 i m+ @ end;
* l+ ?6 }+ F. D' o- q& Q (3) repeat
+ X6 j# |4 i( N# p <statement sequence1>;
9 Z2 [6 ]. P0 E2 w ` until <condition>;
( ~% R* W* m+ A. i: \1 b (4) for <condition> to <condition> loop
" ?/ w# t" I9 {) y! A+ v <statement sequence1>;. l" a% {4 @" W5 h5 @
next;
) a. J& K0 g" c, Q3 ?. |/ p3中断语句$ b- A$ [1 Z4 N# ^( a9 D' f% a
waituntil <condition> prio <integer expression>;3 k8 ]; i0 D" B4 U
& h0 @. j4 H! O2 Q' I' M! u
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以上为常用的函数！
) h* Y# E; ^" L& A还有很多，如有需要我把资料发到你邮箱里 2 L# L2 S( ]6 f5 i) e. J* [
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