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发表于 2012-11-13 08:48:12
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1判断语句
. r- f/ T7 W0 s) |! u4 I if <condition> then4 P! l3 m% ^+ l( }1 B. @3 G
<statement sequence1>;* P5 c6 a- p u' v
elseif <condition> then
( f- W T% o( H* a9 O4 Y' _: N" c <statement sequence2>; X& h3 r8 Y; T4 s: X
else
8 L/ w0 S1 W$ W' R7 S, W <statement sequence3>;! E. v8 A5 @$ @3 o! _# ~: h5 ~8 }
end;! w. I3 Q2 z) E) L/ @2 h
如果分支比较多，用：4 K( `% O" ~: ^7 k
inspect <expression>( r! d1 q4 Z+ d
when <constant_list> then4 O# i: O) w$ y7 K3 J
<statement sequence1>;
' ~% V+ { _) A1 t5 Y4 \ when <constant_list> then
5 c4 `7 z* ~, J; |* r! u <statement sequence2>;
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else
* ~! X( }2 q2 q u ]% e" V <statement sequence3>;
4 K9 G4 ]% J6 F% \1 uend;
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% e. Y7 l6 o# g( y& s2循环语句: e0 W, h4 @4 |+ r- y
(1) from <statement sequence1>$ ~$ l6 a2 I: Z/ G
until <condition> loop
- h8 ]# g& w6 u <statement sequence2>;: v0 b. F8 _7 a1 d. ]
end;* _" d/ G! t4 I: O2 o$ u9 {% X( X
(2) while <condition> loop0 n# M: m; t+ ^# v# J" Y
<statement sequence1>;
; s9 A8 A& }6 C6 h9 ^$ X' i m end;$ K* j$ m& R3 r0 l
(3) repeat 8 m2 Z5 Y3 H; y
<statement sequence1>;
7 z) E6 ]# ~- K. I until <condition>;9 [' I0 F2 i+ x/ Y2 `
(4) for <condition> to <condition> loop5 {8 p4 l) B9 H7 r$ G
<statement sequence1>;
, U f" B5 W! v- J( G4 u9 r# P next;3 N* x* I# U+ a7 h9 `4 v+ e
3中断语句
k& j7 Q* t5 \' r waituntil <condition> prio <integer expression>;* `1 l$ k9 I0 w3 y" E, _2 e: U
) y) Q K. |& h" z0 G/ ~1 B& C7 f2 `
以上为常用的函数！
$ b6 k5 R! _1 E$ k还有很多，如有需要我把资料发到你邮箱里 " C2 F" k+ i+ v# _4 m$ Z: U
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