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发表于 2012-11-13 08:48:12
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1判断语句
- n1 ]! O( D( e: P7 [- j2 q if <condition> then
- V( E$ |0 @ A# s9 B+ y# X; D <statement sequence1>;
7 C. ^7 |. x$ W5 {# @ X elseif <condition> then
" j6 m/ G, s$ @3 d- B1 J <statement sequence2>;: {! }1 p% x Y' J' R, h9 A& {6 {6 G0 W
else * \) [6 N3 x$ `5 @ Y4 i& x F
<statement sequence3>;
* y( ]( Z& A) Y0 f% U. s end;
, |. ^% b5 K6 i: W- S8 @0 R如果分支比较多，用：
) f( X# V+ o( t- [* f inspect <expression>
! D% C" D& @' h when <constant_list> then, r+ i( @/ _1 _3 c
<statement sequence1>;$ |& a+ @( w0 w4 W8 E
when <constant_list> then7 _# [: n. o% G
<statement sequence2>;
0 t9 z. E/ m+ c* h( ` ...
- `% z) A* z ~. _* P$ `4 h$ _% \% f else
: N/ Z0 {1 v; B" B5 K6 R <statement sequence3>;, G- w, h3 i# q
end;
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) S ]9 A- Z9 F2循环语句. {) G- J, Q$ r) [
(1) from <statement sequence1>
( J: l! I4 \) \9 b until <condition> loop
2 v/ |3 N/ @$ e; N7 w4 g J* a <statement sequence2>;
, M% K& d" W9 j! A end;2 v: c) ~' t! R* ?1 w- C; m9 {/ S
(2) while <condition> loop' E" I' X! y! b6 A' G: L
<statement sequence1>;$ e6 y+ a% e7 t; j ?3 T: y# C, |
end;+ Z+ F5 X3 C6 A! I1 s4 f6 ^
(3) repeat
; l& C6 B) B V5 u <statement sequence1>;
9 H: e8 B/ G# Y, V until <condition>;
5 O! K+ X/ I' P* A (4) for <condition> to <condition> loop
8 W7 [) l% \% w4 K( F' v0 I* K <statement sequence1>;5 f; k2 e \# n2 s3 r m; E+ ^: M
next;
4 o, B: {7 c" @3中断语句
! `0 z2 Y$ M: p' G" B6 _ waituntil <condition> prio <integer expression>;3 K; y; B# L! I+ D2 ~
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% m0 }9 {7 Z" A9 ^+ q
以上为常用的函数！$ w, a" Y, c% f- E
还有很多，如有需要我把资料发到你邮箱里
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