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发表于 2012-11-13 08:48:12
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1判断语句
# j% u% B! K! k if <condition> then1 {5 `6 _& S7 o3 T) Q- f
<statement sequence1>;) f0 ` ] n# k6 E" o1 u9 a
elseif <condition> then) Y; ?& ]$ N& W- K) A
<statement sequence2>;) Z9 Y) D4 n( Y9 L- Z
else 3 N# M5 W1 u; t
<statement sequence3>;
: ]' \4 M5 v) R2 m* X8 b8 Y end;' o7 a) S; R/ e; j: N |( d
如果分支比较多，用：
0 t0 {& N2 g0 e inspect <expression>
, l+ e. Z! l+ d5 E2 c9 _ when <constant_list> then
1 l& a& k6 i: w' @ <statement sequence1>;; w ?7 \( E% o6 b
when <constant_list> then2 Q K( M. V5 G0 H% M* _9 T. l
<statement sequence2>;
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else! o# _& ]6 P& Q2 w
<statement sequence3>;
1 I5 @+ \; S+ X7 h8 q% V6 Oend;
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2循环语句/ w* a# g1 e) ]7 _8 T0 @$ @( p
(1) from <statement sequence1>
7 p1 V2 Q, @* } until <condition> loop* J$ A. i- [1 _2 u5 \! a
<statement sequence2>;
3 S. H7 k+ E. P; Y end;
' j# |* O, U5 C5 {( v (2) while <condition> loop
0 Z" y! y& F; }* K* O% e! y6 U <statement sequence1>;: r6 S9 C: h j3 J
end;
$ s7 Z0 H2 S9 S9 K/ _0 i+ ? (3) repeat 4 o1 }1 l" q# @. }
<statement sequence1>;
8 B( ]7 E' m A3 q* q until <condition>;% x' t) q9 {$ ~: j+ C& ^7 ^; V
(4) for <condition> to <condition> loop/ v+ p6 M9 }* g4 U8 h8 Y/ n
<statement sequence1>;7 b5 b4 k ]4 U2 B. M
next;2 j6 U0 R" p, h) K' ]
3中断语句
2 e* p& b/ y' M4 y+ }2 R7 V waituntil <condition> prio <integer expression>;
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# _( R; U& Z9 f, B/ g以上为常用的函数！
) I! A \1 ~" e* ^* m. b9 B4 o" u还有很多，如有需要我把资料发到你邮箱里 . U& s( `$ B, e& {
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