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发表于 2012-11-13 08:48:12
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1判断语句+ m6 A3 ^+ I) |7 }, {: s7 U
if <condition> then
* W# u4 _: p$ t3 c+ b9 w- @" E5 i <statement sequence1>;
/ J% F1 D, P% W8 n! L7 A elseif <condition> then9 _: n* Q! `/ d/ w
<statement sequence2>;" W! V6 m# E4 L$ y0 d5 ?
else
% Z* A1 D& r" |+ j6 C" t* { <statement sequence3>;
( ~; h* o1 e' ^ u/ l3 i& n5 I' h C end;$ |7 u9 Q+ e+ T3 P
如果分支比较多，用：, g+ _) b, S9 v+ k/ a3 @+ t
inspect <expression>
4 u/ p$ r+ |+ D) ~, i% Y- E when <constant_list> then% a9 Q0 W' S' V! H" m& ~5 X% k
<statement sequence1>;9 A) F: E9 B# {
when <constant_list> then# ?2 V9 g" ]6 D# n" e( g
<statement sequence2>;
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else
4 V/ |; O) ^; I <statement sequence3>;
+ H9 z% N+ J3 F3 F) y7 p6 Fend;
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2循环语句
% ~( H# E! N. L- s3 _& x# v (1) from <statement sequence1>
; p/ j1 K: h0 u until <condition> loop
2 v/ F2 X j% h4 N <statement sequence2>;1 k( l- r4 f* `' s
end;3 c" N! A/ I2 E$ }* Z
(2) while <condition> loop% @; |7 Q/ B/ L* U; z, j+ g; f/ M
<statement sequence1>;, {2 `4 p- v. o4 v5 d( s
end;
+ ]4 M: E' W6 B& {8 [0 }) B { (3) repeat
* e9 L0 l/ g2 R; k0 o1 O V <statement sequence1>;
1 L/ ]( ^, c# J4 {6 U' D/ e until <condition>;
9 D" g/ D% H2 J* k, s2 Q( Q1 w (4) for <condition> to <condition> loop" g# W5 J) Q! g) t. {. }- y
<statement sequence1>;4 S7 V. }. Y+ d% p! H$ v
next;
p- ^5 N! L9 Q( w" J3 ]5 X" Z# T3中断语句4 e6 J' q4 P' G2 X
waituntil <condition> prio <integer expression>;
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: i/ c* X( A: [2 J0 m: \' S以上为常用的函数！
4 o5 s) p* k( W0 O# }还有很多，如有需要我把资料发到你邮箱里 & N$ m3 ~- M; K7 e! ~2 A9 h+ r6 j8 L2 t
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