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发表于 2012-11-13 08:48:12
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1判断语句$ d" }4 B7 V" H; ]0 p+ g' A
if <condition> then
4 d c `4 O5 [ <statement sequence1>;
$ Y$ {2 ]( Z9 }5 z( Y* t Z% c elseif <condition> then
, ^- b9 y4 `; [2 U <statement sequence2>;6 O4 ^% W. c! r
else
% M0 A/ ?, ?* O9 I% @ <statement sequence3>;$ b0 w( B& y e: I& e3 ~# ^
end;2 f9 y2 B; e Q
如果分支比较多，用：
4 j7 Z3 `/ B1 }9 g% | e/ V$ {& ~ inspect <expression>5 H' t M) B5 T- y) B; ]
when <constant_list> then
+ c5 P* q- s, N9 K- l+ d7 w! W _ <statement sequence1>;$ Z. W! o a8 ^! f' m
when <constant_list> then7 m4 d5 l8 L5 y# G
<statement sequence2>;
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else e" b) X E( ^3 T; y( _
<statement sequence3>;
! n# @$ c% M, b+ i* aend;
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3 K6 P0 u+ l3 J2循环语句
% y1 I( d% j: ?/ |7 U: C( J (1) from <statement sequence1>9 {+ h! W( q2 z
until <condition> loop0 H3 S& y& V, G9 r; {
<statement sequence2>;
2 ?. u$ V$ W) c- ]* N0 K0 f2 m end;# B- g+ y" Z# F. _) i ^
(2) while <condition> loop8 j8 l) _: w7 b
<statement sequence1>;
* ~* Y A" h$ ^+ N1 h, U end;
4 M7 I, y. o) k6 I! |( c (3) repeat
* q0 l; n+ {+ i9 c/ i4 @ <statement sequence1>;
: R7 S! |: z$ L" T. V5 m1 u0 D+ h3 K until <condition>;
7 I# ` f% J0 s2 m% }' \* ^3 t (4) for <condition> to <condition> loop+ E* z2 C0 K$ L: t' G6 ^* D
<statement sequence1>;
0 \4 n( n' X/ ~+ e next;
+ S% a* ~1 o5 |8 R& J- k" z9 v- X6 a. g3中断语句0 B) h% H; h8 j4 `
waituntil <condition> prio <integer expression>;
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1 C* D8 X+ Z5 N, {
以上为常用的函数！+ v% I+ V+ A; w5 B) M$ s9 g- H
还有很多，如有需要我把资料发到你邮箱里 x0 c$ X5 y i/ @
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