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发表于 2012-11-13 08:48:12
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1判断语句( j: z4 K9 @% O. h$ r
if <condition> then
* A2 t4 I% U, M9 X# m C- m! z <statement sequence1>;
6 k* M7 b% g, U& Y$ B& h, M0 W elseif <condition> then& N' h4 {0 ?! D* G9 ~7 O
<statement sequence2>;
; s8 W" U( ?0 m3 s9 U) r( I5 G else ) v& S0 L+ T. N3 X/ Q3 B
<statement sequence3>;& U D( z' U' {, K$ [
end;
8 T `; ?/ Q+ _: l* ] n# p如果分支比较多，用：
6 `' \* K7 k4 X# p8 q- Q inspect <expression>2 z" M" @6 x1 i
when <constant_list> then
2 v* P# r! r O <statement sequence1>;
) I. o E( O. a; ^% r( W when <constant_list> then4 ]- c$ p3 s: _3 n% V1 N; J$ m
<statement sequence2>;( k. K, T. i7 W+ o% `$ `
...# K. E$ k: v& y! b( K1 b
else) j; Y. v. L* n$ }
<statement sequence3>;
; R: [/ d l {' Lend;
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2循环语句
/ \9 O# @6 p& v+ t (1) from <statement sequence1>
1 U8 X1 k% `9 v. x8 q until <condition> loop
0 e1 D6 Q# \: L2 n" O2 C: j: l <statement sequence2>;
' m8 o/ Z1 P% i& F( x1 y end;
0 s% z/ n/ g8 `! c (2) while <condition> loop% z$ F6 R9 f& K
<statement sequence1>;
( k: j/ O5 V2 H5 \4 E/ \4 M# B M end;& W5 }" ^# i( o# Z5 k
(3) repeat * A. u* n3 k( z, D
<statement sequence1>;
. q. K9 h9 R; T r until <condition>;
) e0 r: K! @$ _+ [# @( R) R* L* X (4) for <condition> to <condition> loop; |# O: h4 K/ x
<statement sequence1>;$ d4 u. d( Y0 A2 A
next;
l, }) q1 R B1 I1 C8 z( C3中断语句; R) Q6 f% D) D; j( Y& X
waituntil <condition> prio <integer expression>;4 f: h& K8 x6 C( X
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# G( @, z3 y3 l% [- y以上为常用的函数！
4 \" n- k1 n! M/ H1 _( R还有很多，如有需要我把资料发到你邮箱里
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