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发表于 2012-11-13 08:48:12
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1判断语句
4 R) R, c* V( }. m if <condition> then
% `7 N$ \) `; F r f7 F <statement sequence1>;! c; z; Z. Q |; A" m! Y% q
elseif <condition> then
) I8 d) _3 C! E2 } <statement sequence2>;# [' N9 i8 [; P7 ]" G- H
else
; J: ]9 h1 y! A" T$ r2 ? <statement sequence3>;! R! W" H" D1 N5 ~
end;6 I3 z: w! O, X- ]" [
如果分支比较多，用：6 {: @- N# f, R0 A7 A7 S2 h" v
inspect <expression> H" `' s. W0 ~/ [# x$ N
when <constant_list> then; m0 B* v8 M$ x# Q$ X1 d
<statement sequence1>;
' ]7 s o7 d, k7 F5 }' a when <constant_list> then
3 g- [. N- g1 K. M9 N <statement sequence2>;2 {' ]3 V R6 U: O( s
...8 S' p! E, z1 R2 Y* `0 e4 q
else
( n# Z. y5 {/ w, M <statement sequence3>;
3 r' N/ d* r( g0 b8 B6 s5 Y1 P2 oend;
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; \6 N# S: h6 M" Q4 \6 h2循环语句. g7 y5 m7 l. s4 v7 k, T
(1) from <statement sequence1>
) H$ y e3 B6 e2 @- f: d until <condition> loop; x! M/ F M& a% ~
<statement sequence2>;
+ D: u/ q T" C. ?5 Z( }- w/ T+ r end;; N4 u: K2 x3 [. a' K
(2) while <condition> loop% f( r2 b" m) {! M$ m$ u
<statement sequence1>;
, A2 f9 ~. r; x8 J- O end;! C$ r" v! {* n, i
(3) repeat : U6 [. o; J5 o$ {! z" v
<statement sequence1>;, d3 G% U( A: M& K' J
until <condition>;
; x" a. V$ |5 ]. n& P2 \# Y9 I6 n (4) for <condition> to <condition> loop
: Q7 i T9 F7 \$ j. |6 {3 {8 G <statement sequence1>;
' f+ M3 R$ H/ d next;
a! q# E+ f) ?0 l: @( \/ Y3中断语句
- V0 K$ v# s3 B1 B$ e9 Q1 W, j waituntil <condition> prio <integer expression>;
) h k( ^5 s4 ]( J z1 d, |# F8 Y% L. v+ Z& h$ T7 d- X/ t+ K/ S
* Q" y7 n! [ V8 {: c以上为常用的函数！+ I1 k7 G5 u1 a! Y2 `
还有很多，如有需要我把资料发到你邮箱里 9 H/ d& h: c( B3 S% r ^' C8 Q ^
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