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发表于 2012-11-13 08:48:12
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1判断语句, U$ a2 E! r4 R. Z
if <condition> then4 j$ o9 f- [; X# h9 e3 G. I1 k1 ]
<statement sequence1>;
; T! Z) F4 |, c$ e$ u! N; |- y elseif <condition> then
0 q: A6 h& }* Q q/ ~+ G* J2 p <statement sequence2>;
8 _2 A/ p/ ` ?. T else , Z( q Z% b# _
<statement sequence3>;, S( Y* X8 s& a
end;
$ e$ X3 n0 J. Q: o如果分支比较多，用：
# ?$ Q0 o7 j' D* Q inspect <expression>
. D* _8 y. e6 @, }# v7 H when <constant_list> then# J2 U- w4 Q6 L* F8 F" A
<statement sequence1>;: H" q. G, W7 G/ i% B, D7 E- P
when <constant_list> then
% a" v5 C6 @* d; m <statement sequence2>;0 A& {' O _- S
...
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<statement sequence3>;7 w1 c0 {8 h/ Z2 M" Q
end;
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8 `- t- Q2 x# q4 F) v2循环语句 C L8 `+ Z; G; K/ [
(1) from <statement sequence1>* T* D+ m v# |/ Y( t/ D/ G
until <condition> loop
3 L+ Z3 p9 C7 b" K3 P' F' p5 _! X <statement sequence2>;
) o) h; f. n: { l# S end;
' Y; a) Y6 K3 M* g. z9 W4 R1 A (2) while <condition> loop# i% w2 i# O* ^" y
<statement sequence1>;
! s( F( e/ U4 T, b8 ~6 P* `0 n2 | end;
! v/ [7 k5 x; o/ l; r (3) repeat
) @& m7 O/ m3 `1 @( S <statement sequence1>;8 X! X* K1 q( i/ m2 f
until <condition>;
; Y/ d: L7 B2 B8 l1 Y7 b5 A (4) for <condition> to <condition> loop$ `, E" b+ H9 T9 y
<statement sequence1>;# M" {$ o) T" l+ i3 G3 a* x
next;
0 I o- z/ _+ g+ _3中断语句
$ [1 l+ G9 \) ~' I# D6 r h) } waituntil <condition> prio <integer expression>;( k! t- d4 @6 X9 A9 ]( ]
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" i. ^2 [. N4 ~' p" p8 C3 t1 M
以上为常用的函数！
& Z4 z6 ?5 F1 S, E i6 J还有很多，如有需要我把资料发到你邮箱里
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