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发表于 2012-11-13 08:48:12
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1判断语句
/ x+ L7 m* S/ X. o2 I if <condition> then
% y4 f: p: }2 M, @5 i4 R% W <statement sequence1>;
% E W: S* K* R9 G- l* t/ Z; H elseif <condition> then
8 w7 v$ _/ n+ ?0 h <statement sequence2>;
3 X" n: f3 j1 x! H' G else
6 O3 B$ ]' O- P# m% P <statement sequence3>;
: D4 H- u! g( L: t1 s# a8 M end;
. b: D: r0 b! G1 k如果分支比较多，用：
& J- n4 a P$ {) r inspect <expression>: q. _4 @- A: W& d9 b; L% |
when <constant_list> then/ _) q- ^; x1 t; L5 S
<statement sequence1>;
4 }# Z# `$ v: v7 M+ Q- q' x8 @ when <constant_list> then# k& o7 w2 t' \* R; @) L l2 ^6 C
<statement sequence2>;/ P9 b- I! d) |# q
...
7 V% z$ y% W& a5 |- h else
o6 O* v' M' V; U. A' x5 ^ <statement sequence3>;( @: v8 h% ~. D; m9 v/ c
end;
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Z+ R* K' g Z4 F/ g7 }2循环语句# G8 X. {# b/ p! m/ w
(1) from <statement sequence1>
# O2 C8 F, |6 T2 B' U* M% D# I until <condition> loop
. I( L: G* j8 P: ]8 E1 d <statement sequence2>;9 @' L8 c# C+ g; O
end;
6 S) F7 v* ?7 R& p7 w; R4 B (2) while <condition> loop
3 _4 e8 [6 A& g$ N <statement sequence1>;) F* j) _, G; R1 b9 p' j8 j( v
end;
0 D7 B+ g: N# Y6 E/ W (3) repeat
, H3 a: x! e0 B <statement sequence1>;
1 f$ d" s9 q1 ?0 y+ P$ x$ F m until <condition>;" n/ @% O* e, }7 B
(4) for <condition> to <condition> loop2 s- ]5 E4 n+ P* A3 A5 [6 T8 [$ X
<statement sequence1>;
+ i# ^6 R3 [6 I m next;
1 Q& U3 s& P+ c2 E. H/ B* r3中断语句
& x" k" v9 B6 J2 |& X0 a8 s waituntil <condition> prio <integer expression>;
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以上为常用的函数！* z9 X; V- q# M! \0 n( [8 d% a
还有很多，如有需要我把资料发到你邮箱里 7 u) U9 |2 B8 _5 I! p% z7 p
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