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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
3 u9 d' p6 J: o4 l# M. F; D+ Q if <condition> then7 H& M3 V/ A. ^" S2 ^" P
<statement sequence1>;* x1 x( ?+ L7 `4 n
elseif <condition> then
& Y/ R, d& D' g. O& k <statement sequence2>;( d @. p, S$ X" s, _- ^( f
else
3 m" P9 E0 |, \) M- O. c* f$ z <statement sequence3>;
& ]+ p) J5 G) d! r8 P: j& a6 I end;
6 E- i4 X' V4 A2 K* @ p如果分支比较多，用：
1 l8 ~% L" U& m% v inspect <expression># x) U6 R/ O+ v4 S3 v7 \9 m* {
when <constant_list> then. E8 X/ T) ]. V2 R9 W( K0 P
<statement sequence1>;
/ `! a# c G4 n4 C. n when <constant_list> then
* w+ K4 r& I6 F4 F' \2 v) k <statement sequence2>;9 O: L& ?/ g, H T$ h6 n1 |
...
6 _0 ^$ R5 q3 ]- Q4 H- M. R else) |+ f( K9 r8 `* e
<statement sequence3>;
; L% G8 O* p8 W2 y2 ^end;) |0 G) m( j. x' F ^0 ~" f( N
7 v' w+ J+ t: R2循环语句" _4 v2 O9 `9 Y1 i. {) Y5 v
(1) from <statement sequence1>3 u9 M+ [/ I+ t0 f4 E
until <condition> loop
6 e6 H( C! K3 D2 b: }9 B( ^ <statement sequence2>;
/ e" s) q0 E& _7 K end;& _9 ` t( Z- F1 F3 Y
(2) while <condition> loop: z9 G# ~; X8 ?/ Q% y! P
<statement sequence1>;
( `. e0 i# N4 b0 q; K0 K end;
9 _% }2 J) S1 p' F! d& e (3) repeat $ }& }, @4 i& B
<statement sequence1>;
8 V! |" E h% N7 P# j until <condition>;
0 K% s" g2 e6 o+ I/ D (4) for <condition> to <condition> loop$ h# |1 U9 P" _8 H. {1 ?2 W
<statement sequence1>;
- Z& W' a! g5 Q) w+ r( O1 E next;7 y, e7 }2 Z4 w2 B4 y x# g
3中断语句
/ j f0 e9 b9 |% M: l- Y0 l2 e$ q waituntil <condition> prio <integer expression>;; E8 S2 K' V5 _
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以上为常用的函数！9 u" @( K4 P' `$ V5 K
还有很多，如有需要我把资料发到你邮箱里 6 j4 X. U7 L1 h2 j; K' P4 v" S) Y1 z
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# s7 ~( D3 b4 L+ e g7 m! T- c# f0 D O- |4 X$ J; T& l {
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