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发表于 2012-11-13 08:48:12
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1判断语句
! ~0 d% t: w8 y9 e, m3 S* @ if <condition> then
, h4 T* t4 o! F: y X <statement sequence1>;
, s: W: Q& C. b; A8 ?. z$ A; C0 W4 s elseif <condition> then
' c: ~1 t% a! Y! r' x <statement sequence2>;8 O" I$ K8 P5 h( v/ L7 _! _2 d
else 4 [$ X4 k, G3 T2 `# M$ b
<statement sequence3>;
& x" h. s( ~& R L$ Z end;
; U/ v8 {$ Q7 U如果分支比较多，用：( u% ?6 |6 ~6 b6 N
inspect <expression>
. o7 \" N' q# _3 Y/ v( T/ @ when <constant_list> then* ]6 z$ @, R k! s0 F2 _" }
<statement sequence1>;
3 D9 o0 N4 u/ t2 K7 h z5 ~9 X when <constant_list> then3 \9 E4 W* A4 J m8 l
<statement sequence2>;
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else
v# M% t6 q# M' @ <statement sequence3>;
7 }7 ]" E8 H: V6 p. `4 |! J+ Rend;4 q m/ U: W1 @2 f7 R+ }' @/ ? q7 e; [
' a1 u6 [5 E- f0 i2循环语句
6 c6 ]* ^4 R7 }' G (1) from <statement sequence1>+ J6 ^9 Q3 k* @" G& F
until <condition> loop
1 ~/ D' m6 i$ o <statement sequence2>;
' o# Z$ I2 W: T. n; w end;
8 E8 w, a% v; L1 g5 Z2 [ (2) while <condition> loop3 U+ ]# R% I% d
<statement sequence1>;
- c7 O- Q9 u* t+ A& Y end;. a3 S- X5 x+ u" `8 @
(3) repeat * s3 `7 n$ z# Z8 n* M
<statement sequence1>;
! v2 X% @. f. z, _ until <condition>;
4 m4 i8 a0 {( G1 P9 ?# p (4) for <condition> to <condition> loop. P* z, ?4 I- R% W' o
<statement sequence1>;
) N5 i* V- M; V; l1 n next;/ K: W3 T1 n! o
3中断语句
4 J; S) {( P$ Z% |0 B8 ?/ E F6 L waituntil <condition> prio <integer expression>;
1 X: d+ E1 u' W7 D1 a% h( H' j/ m; @ q
" x+ N$ d4 b) _) w$ Y) s- B: ?
以上为常用的函数！
9 ~, {) [* Z( l$ P$ f; M还有很多，如有需要我把资料发到你邮箱里 , `! g/ J1 m8 b2 v. V u
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f# }4 {9 }: s0 @' a
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