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发表于 2012-11-13 08:48:12
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1判断语句
( |- M/ J" u7 q) \ if <condition> then
% w% r: K$ C( a. { <statement sequence1>;
4 W& `5 r: A9 P elseif <condition> then
" V, r) F2 F ]" G7 b% j% O9 ` <statement sequence2>;
, r2 D$ K3 Z+ V/ E j" t else
6 I0 C& V% a( U <statement sequence3>;
; G2 p$ E4 J/ X end; A' f/ d6 c, ?, U
如果分支比较多，用：
* q6 r, E0 e/ X" U7 J0 _ inspect <expression>
' R" h6 b% o1 X) V7 o2 ~ when <constant_list> then# q8 k) X& z& T6 i5 z
<statement sequence1>;
7 h7 t9 N# o' ^4 S3 o when <constant_list> then9 {& p( c6 Y) K' D& X: Z7 M. r
<statement sequence2>;8 w$ S y6 J, |+ C) ^- r5 x- G1 G
...
9 L$ i8 x& v) y$ K else
5 u2 X. Y* s4 s' G, F <statement sequence3>;% z' T) q0 `+ l7 ^7 {$ s8 }
end;
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# g; L( t/ P' d8 _2循环语句! k. f; o/ s8 X
(1) from <statement sequence1>; A: \; Y8 @# a6 i! i1 z! P
until <condition> loop
* E( q# ^) a) Z5 D <statement sequence2>;$ T6 x0 ]3 r q
end;. y4 v, |' o: A3 t# f; S: l
(2) while <condition> loop8 W; P5 E5 q' q" O+ e; i1 C
<statement sequence1>;; u x. T2 Q2 r0 c5 w9 }! ?* T0 E
end;
$ z6 p, E8 y' U3 h: k' z1 l, J (3) repeat , `2 @* R" {1 C4 _2 j
<statement sequence1>;
& |- c2 E# Z( X/ o% f, K n until <condition>;
( c6 q1 w! T% B4 i8 P, X8 q (4) for <condition> to <condition> loop
# D' p& l/ l5 e0 u% ]4 U6 p <statement sequence1>;
7 j- `1 w( e& ?) f% ~& W% u4 }% Z next;
; `. f: R# x" V' o7 ]6 V9 `3中断语句8 ]* M. F A7 ?0 L
waituntil <condition> prio <integer expression>;/ b6 G. i8 m- s# B
# u4 y6 I- e9 |2 P# `
: c$ V' M% Q9 ~5 M4 D) W2 F以上为常用的函数！5 C# n1 h2 F$ x, l& R1 Z
还有很多，如有需要我把资料发到你邮箱里 3 g' q: H- B5 _3 ]
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