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发表于 2012-11-13 08:48:12
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1判断语句
- ?/ d5 ]9 e$ x8 U: U if <condition> then+ ^! O4 n$ o0 i, H3 }9 j! X
<statement sequence1>;8 K# u4 X+ b6 H4 ^0 Z p( n
elseif <condition> then
# o8 h4 c, ~* p) R$ _7 U0 Y <statement sequence2>;. s E" {: a& j) @
else ) r2 f7 S/ M/ [
<statement sequence3>;( V' Z, V3 ]* | L5 e
end;& _5 A# U8 H( f/ {5 d9 {" c. y3 ^9 f
如果分支比较多，用： {) `* _5 @( d) f
inspect <expression>
5 h# d' C3 N1 P( O C$ v when <constant_list> then
, m+ A7 @1 m. }9 _& M, S5 n <statement sequence1>;, A* L4 z. Y& m* K; x" r
when <constant_list> then/ ]6 A$ `+ n" g/ B/ Q# F* v; h/ M
<statement sequence2>;
# \3 T1 c) K* i6 n3 }3 y! i ...
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<statement sequence3>;
, p0 W a0 ^' c" U# O$ k: ~! ? Eend;
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$ r: I4 _( ^. K0 ~, q2循环语句
7 P* G: x" E9 @# h1 Y (1) from <statement sequence1>
' S& g6 z+ N8 g o7 Z$ M until <condition> loop; u) e) {$ P2 h: H! w7 o! V5 O7 P
<statement sequence2>;
3 [% N. M6 ]. x end;
: F2 v8 O, A$ r. p (2) while <condition> loop3 I' q9 }, v, d3 O- P
<statement sequence1>;/ d5 u: I) R! s3 X( y; ]
end;- [; W+ m+ I j' L3 Y
(3) repeat % V9 J* A2 H$ q* l% X, p( O6 |
<statement sequence1>;: Z, @3 [; A% D8 J3 c9 | ]8 B+ J
until <condition>;
( ]) E( T% s9 W3 K7 N7 [* b2 M (4) for <condition> to <condition> loop+ I. a9 H4 b# o7 ]$ H3 b, O
<statement sequence1>;
* o( v% x) [5 T1 ^ next;- s2 Q- Y- ?$ A/ {
3中断语句: D0 A4 e2 s/ A' t$ m
waituntil <condition> prio <integer expression>;
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以上为常用的函数！0 w+ d' ]( }: n" F# q
还有很多，如有需要我把资料发到你邮箱里 ! }0 X7 P: y1 t, F, d
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