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发表于 2012-11-13 08:48:12
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1判断语句
1 U3 {8 f2 D0 x2 U! \% q if <condition> then
3 t+ @8 V! o: L3 |9 @ <statement sequence1>;% f# b: E) W. k7 U
elseif <condition> then; @: A7 }* ^, R& B, [: Z4 O" D- k
<statement sequence2>;& L; C! C1 p5 I6 z$ f% V
else ) b) ^8 j8 A7 R! G- l/ N8 I1 c
<statement sequence3>;
: [$ g0 Y | `, E6 u end;2 _) H, d* ~! p
如果分支比较多，用：
6 Y/ W J) H) i& [$ M( b inspect <expression>
2 }$ z+ G* ?6 S$ \( C2 b when <constant_list> then. ^# ~. x1 @( C2 M' i/ X+ {6 m
<statement sequence1>;# o$ H8 N) Q0 ]! ^3 n
when <constant_list> then
; P0 L @ o' r/ m' j <statement sequence2>;/ F5 k7 F" U5 F" I
...
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<statement sequence3>;0 J* Q! p& _; v+ y, V+ b( H
end;
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& W& ]# o9 L! n; |9 w I2循环语句% H1 r/ [$ U; h( o1 `
(1) from <statement sequence1>8 ~& S. U6 r$ n* s0 v+ ?" p1 }
until <condition> loop
0 y- J/ @* K0 ^6 A% v <statement sequence2>;
4 \4 |* l; v2 e end;
' k9 v* ?7 s+ ^4 N/ g (2) while <condition> loop
8 w( Q. J9 B% r; i/ E7 ] <statement sequence1>;
* F$ b9 w: t' v end;
, h. j) E6 [% H, U/ O8 r (3) repeat : ^4 { o4 v- h/ P+ o
<statement sequence1>;
: M" O7 ~# {% ~0 o until <condition>;
6 p1 t9 c( Z/ l+ |: Q3 ?% C6 t. _ (4) for <condition> to <condition> loop1 f1 [ P" ]! T+ R- X2 q, c& f
<statement sequence1>;
' V* W4 h" n0 d, E% r* R! m( p next;
' t1 y$ _4 c& E& Z" v3中断语句6 t6 ?- X( A9 {) _
waituntil <condition> prio <integer expression>;6 g3 a& u2 ]" b6 |8 s
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以上为常用的函数！
; R5 B! r8 i E. S _# W$ v2 w$ X还有很多，如有需要我把资料发到你邮箱里
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