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发表于 2012-11-13 08:48:12
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1判断语句# y) z) m& v t2 ]- L9 z2 e- Q3 A
if <condition> then
) _3 X" R; m% A& ~ <statement sequence1>;0 G Q- ^& c& Y7 w, |* H
elseif <condition> then! X3 j! w' A6 }, f, [
<statement sequence2>;
' w( Q9 I; T- I* u else ) ?) n' Y- ^4 H0 n2 S0 D
<statement sequence3>;8 V& J1 X u- ~# b, v
end;
& q1 d& m- v# j7 e p+ t' {8 x: B如果分支比较多，用：
5 Y. D3 J7 H1 e* N0 _2 X8 z/ v inspect <expression>, d! _3 T i8 n* R( G0 a
when <constant_list> then3 e# ^* L7 l1 N) e ^* |
<statement sequence1>;
9 S! \/ O. H o" b3 ` when <constant_list> then
2 M' c: V0 [9 ^6 ?/ ]8 V: q* I: n% \ <statement sequence2>;+ J+ z7 d; r1 }6 n
...: }9 f( u0 h+ Y0 b- {* W9 V' R, g
else
! k6 h( R8 @$ g' @2 A3 b# W <statement sequence3>;
9 b# U% x4 F- z7 c8 O( kend;
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& ~. k& c" c6 o1 D9 x$ A2循环语句+ e Z- }% R$ v4 l* Y
(1) from <statement sequence1>
" ^ q, ~) ^& w# Z8 p/ t2 A until <condition> loop- ?6 Y* |7 \1 c, s4 O" C
<statement sequence2>;
/ m1 E5 s' G( J end;
! H7 F5 T: I" i (2) while <condition> loop
2 f/ w9 s! w$ w" I; B) k, K# u <statement sequence1>;
& E7 O1 H4 i. a% ?. P+ [7 L+ I end;
1 I2 N) J" b( w2 [ (3) repeat - N6 f6 n* b! ^, W" w4 Q
<statement sequence1>;: Q: t1 Z8 M. G3 v K2 ~6 h
until <condition>;
' r# ?- f* a$ D N7 \ (4) for <condition> to <condition> loop
$ v7 @9 K! }% n0 o a1 `2 X <statement sequence1>;
9 i3 i& y, s* Y j( \6 @% O$ Y next;/ [2 A2 j( |' }& k
3中断语句
4 b3 u* h$ Z# T6 D8 L7 [ w" A waituntil <condition> prio <integer expression>;
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( H7 {3 y9 U& j i: I+ P' x; a: k以上为常用的函数！! `; v7 ]1 y: [' T G
还有很多，如有需要我把资料发到你邮箱里 , b8 }- E! \ f3 h+ {2 h; A
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