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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
7 b) f4 M# [, m- y; R2 P- d5 i/ J if <condition> then4 T5 r1 V4 f- a- x
<statement sequence1>;
/ l" ` ^. O5 o( X elseif <condition> then4 ~ u" ]/ ~8 G) R, b, P5 L! e1 v
<statement sequence2>;/ I8 }% o. X4 Z" |5 _+ x
else
1 L4 m( o3 h6 h H; F5 Z <statement sequence3>;
U* K8 E; o4 n5 K end;
. A' M+ E% b& |/ d, q. R: G0 q' O如果分支比较多，用：! d+ V5 F& k1 a
inspect <expression>
4 H( o8 c9 e9 ? ]$ } when <constant_list> then& X. H) d% e' H8 H% m8 _! }
<statement sequence1>;$ p, ~- Q& e; ~' S y$ d9 ? f
when <constant_list> then* B1 n# }$ Z G
<statement sequence2>;" I! a. ^- n( Y
...
6 z( j6 @3 n9 ?' \! v/ w, S% G else' R8 j4 M `$ ` D a7 H6 V
<statement sequence3>;, L6 N+ r1 A( N: [
end;; }5 u5 X6 K; P6 D V( @+ O8 P
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2循环语句
1 V; }/ U9 c1 E (1) from <statement sequence1>
7 U- q) Q6 t/ E8 m6 @! F! n until <condition> loop
9 i. D7 E4 X! i# o5 d2 m$ N9 [ <statement sequence2>;" d3 s1 T9 \) z) C$ z: [
end;
* e: A/ h6 k! S5 c/ n (2) while <condition> loop# h* _$ n. k% g5 D( ] K9 u: X
<statement sequence1>;7 X* J# Z, ?1 I$ T0 t. j, P9 M
end;
, w/ F1 J1 @8 W (3) repeat 8 t, L6 J ^5 j& M
<statement sequence1>;1 Q# S- c1 @- b7 g. W5 [
until <condition>;: [% ?$ U1 O& b7 Q6 c
(4) for <condition> to <condition> loop* d3 J- {) R, v; a
<statement sequence1>;
8 ]" d% ~/ ]+ W next;4 \2 n* D' @" S+ L/ C: b* k/ G) a
3中断语句
1 B/ Z6 {# ?) n1 W. u. U& G waituntil <condition> prio <integer expression>;
1 c' t! \' l2 _, m7 ?1 z8 y3 |, g4 d; F5 x- a$ P# N
7 {- U* t7 ?4 n. r& o6 S: E: m以上为常用的函数！
. s, t b' b' o6 c2 ~还有很多，如有需要我把资料发到你邮箱里
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w: a- x0 Y- R' r) J5 X' g& b5 e# M u
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