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发表于 2012-11-13 08:48:12
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1判断语句
2 |; L/ Z, y) K9 T/ [4 p0 Y if <condition> then. q- U6 a: X2 P) _" e
<statement sequence1>;
7 `5 f5 l% ]' Z) w6 k/ S; @ elseif <condition> then( d, ?" X- i- m' w2 a
<statement sequence2>;
2 P9 @! o. V$ |' t+ v: R# | else ) L$ i+ t0 `! s+ q- ]: x2 D# [! |
<statement sequence3>;
) F9 B, Z7 E+ r1 s/ J end;
' T6 J" D& z9 x% D如果分支比较多，用：
+ C4 |2 _- V. y+ k7 n+ r inspect <expression>
8 z6 T5 k8 |% g when <constant_list> then
8 v1 | D4 Y% P8 {/ u% c. ]! n <statement sequence1>;. ?* B5 d+ I, w
when <constant_list> then) r- u6 C: X# n4 l7 x
<statement sequence2>;' S3 Y' y* e0 @% f
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else2 ~# m# }+ i6 y5 N, m1 r* W/ w! r
<statement sequence3>;
/ e1 I" ?4 Q! Z3 P! rend;
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. n. k, z9 x3 L4 P- `" s2循环语句
1 R$ x9 E+ p" f7 p' W. a. }( V (1) from <statement sequence1>9 n) L0 e7 ]7 E. s2 g- z+ i
until <condition> loop1 J% ?3 i/ ?2 m5 R7 U N
<statement sequence2>;
. B$ R0 p8 j- Q* S$ J" S8 A' w end;
$ v, k% q) ]. } (2) while <condition> loop: n! j4 H ~3 l n
<statement sequence1>;
& L0 U R* i4 \" h' O- Z* | end;2 o% @1 f5 M# r$ j* T# |3 a# H8 R7 r8 U
(3) repeat
( f3 Q' A2 N" ~9 E% s: T# j5 Z <statement sequence1>;9 A1 ]' E8 _1 c2 f0 o$ {- m% |% e% A
until <condition>;2 x. N( Y7 k b
(4) for <condition> to <condition> loop0 j( f7 d2 t" `- R& `! B9 [* c
<statement sequence1>;" t$ C/ d( G0 s4 W$ D. G- g8 A* @: u
next; _3 S) Z9 L0 }7 ?' Y7 `
3中断语句+ s9 M3 J" |# D! q! J9 A
waituntil <condition> prio <integer expression>;1 M0 f1 u6 z! U1 d* V6 Y
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3 l' p; x. ~& Q: k5 T. Y0 t以上为常用的函数！7 L5 o) O4 _- @ E) n( h* J
还有很多，如有需要我把资料发到你邮箱里 - ^# O' A$ A7 H2 `; z" A# B
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