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发表于 2012-11-13 08:48:12
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1判断语句
) d7 I6 }& \" n, U3 z) R' C# y if <condition> then
3 H0 S- ]8 ?" E% x <statement sequence1>;
T5 u. O6 V" m9 b B3 ] elseif <condition> then) B4 g( w. r* t8 }- s, }
<statement sequence2>;
0 R2 _9 B* ~, p3 r5 U else
9 ~5 Y$ G0 x/ A/ U$ ]3 Q <statement sequence3>;
4 x. ]% T: {8 @5 m$ {2 Q end;
0 ~+ a1 y \+ J. Q如果分支比较多，用：
* u B0 w- L: n: w' f! ] inspect <expression>
$ N* L8 x2 o* `. B, G8 I6 | when <constant_list> then
" F. H1 X I+ I4 A5 \0 y <statement sequence1>;0 _: {3 ^8 L- s! a) i
when <constant_list> then
$ ^: J8 e7 y6 y. o* Q) X- J0 ^ <statement sequence2>;2 y5 \2 Q5 k; t& D u# x
...
; A& t3 O7 {& I3 {. |1 v else
N3 w/ L3 _, n* C <statement sequence3>;
! ]4 c1 Q9 K! ?( A* i5 j& x# Iend;* k5 E2 w3 u- K& v: ^3 V
! ^# O9 N0 y8 d9 X2循环语句' ^8 ^' Y6 N% B& v! l
(1) from <statement sequence1>
; [! p, m: v! ^7 G6 A1 _ until <condition> loop
2 D7 }. e# D. U$ z' J$ ` F7 a <statement sequence2>;
4 }2 o' c% r$ Y2 H9 o& d end;
: G/ ? y7 C8 t2 D7 ^. _: T& ` (2) while <condition> loop5 p! O' z- o' O- {* q
<statement sequence1>;
% W5 q! e0 s# t end;3 ? g' X% _- d; z
(3) repeat
# [% a* ^. s# {2 [- @: g <statement sequence1>;- c! z& ^# `& k% d) C4 j- I
until <condition>;
5 o! W; e9 ~) s1 k: E" ^ (4) for <condition> to <condition> loop' @# {/ |: M; y' }: e
<statement sequence1>;" e( v, s* J3 [) z' l# M
next;
6 A2 t7 L' w5 ^3中断语句
1 s( C4 n, p8 h5 d5 p waituntil <condition> prio <integer expression>;
; D; x& r! j$ J3 _- z
5 f3 G! I y g* v
0 i, \$ m1 i! I& c5 @以上为常用的函数！2 |1 L9 _4 L+ r w# J- D5 S
还有很多，如有需要我把资料发到你邮箱里 : g d! c2 F7 `
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