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发表于 2012-11-13 08:48:12
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1判断语句
/ y. Q8 g, k1 ?3 g2 ~0 B2 H, N if <condition> then! T- e6 o3 q @/ r$ \: I
<statement sequence1>;$ j: c9 R4 A- W. b4 l4 j
elseif <condition> then+ R g$ F; O- V0 g7 s. ?; y2 y5 C
<statement sequence2>;: z" Y5 Q6 c- v6 Z' A5 O
else
+ E6 N5 K, D9 n& N& K( F <statement sequence3>;
5 c7 q2 S, ^ l% H! ?1 G. }$ S end;
1 o! b' v" i% l! \0 u$ l: ~4 b如果分支比较多，用：! Z+ N5 U+ ^7 |( _$ g
inspect <expression>
3 ]' @) j7 Z9 q5 Q. ]9 y3 d2 N when <constant_list> then( r- ^# h: d7 d6 N0 h
<statement sequence1>;, K0 f% v$ J5 {9 ~ v* G1 H3 w8 g
when <constant_list> then. S- a$ y, _& j% y, m- b
<statement sequence2>;+ h, i; [# ?) o3 W; w) c8 Q
...
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<statement sequence3>;
6 G, |, l6 Y l$ _& w2 |end;+ i) V+ M8 {9 Z1 v, M
. z! z; {$ u9 p. o( S/ p9 u2循环语句" [2 D; S n: m+ g
(1) from <statement sequence1>
" _/ d; ?$ A p" {! D- ~ until <condition> loop+ E8 v6 Q! g# c3 t* I+ ]$ P
<statement sequence2>;, D0 q1 F5 [' V! n
end;
. f! i0 Z* M- X: }$ {7 P (2) while <condition> loop
5 |& y( m: Y; Z2 H <statement sequence1>;0 Y M# z" |5 Y( x
end;' {0 y# [. [, p
(3) repeat
+ x% S/ \3 ]$ o5 M. A. b5 q# j6 e; H4 o <statement sequence1>;
$ h/ @4 m$ L) d until <condition>;
- M2 Q* [+ T* W. p% z0 f6 s" v (4) for <condition> to <condition> loop
8 {5 u. I& a! `( g4 G& b$ r <statement sequence1>;4 s& k* Y4 m5 e' L
next;& }& r/ D! `& D! F2 m3 X( ~
3中断语句+ C, x4 _9 [( Z6 H
waituntil <condition> prio <integer expression>;
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以上为常用的函数！5 J( Q* e3 c9 [' x, a& u$ ~
还有很多，如有需要我把资料发到你邮箱里 # K; v' W1 F! P% t
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