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发表于 2012-11-13 08:48:12
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1判断语句
2 E9 X% c' x2 n8 o0 o; @ if <condition> then$ G b$ c X9 g& G* Q9 @
<statement sequence1>;
0 i9 F# t5 T! |& K' v elseif <condition> then( F' |+ h& k* T0 H
<statement sequence2>;
- L9 j! x( m i0 j$ A else
& T. p$ _. c! L" ` <statement sequence3>;
+ ~2 N3 l0 L% y+ o& z% A z end;
) U* D- b% O9 E3 i e) U如果分支比较多，用：+ { s5 o9 P9 r- ] E
inspect <expression>, _" X3 x- \% v' O6 l! [- M
when <constant_list> then
1 K$ w9 m, w/ m" h <statement sequence1>;
' |3 f7 m2 L; F+ Y; z! } when <constant_list> then
' K9 F- Z9 I+ ?+ f% k0 }/ V: V <statement sequence2>;
! T( [' Z5 t9 ^3 l, S% P ...
3 s6 [5 n" p" c else, o3 b: ~- G/ G5 S7 d7 g5 I/ i
<statement sequence3>;0 M4 V7 J# B3 E2 e
end;4 b X9 \ P- \" i6 `, w' H" r r4 n+ s
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2循环语句0 f3 s/ u8 [1 _8 F `, a
(1) from <statement sequence1>$ i# F5 {1 @8 |: o
until <condition> loop
2 a3 ? C; z# B e4 p5 h <statement sequence2>;
, e8 _! _; j, R, g end;
/ C i9 w8 L+ i (2) while <condition> loop
. d9 p: r* ^* z <statement sequence1>;% k, { G0 \3 \9 O9 k. j8 Y7 @$ S
end;) B% G) ` e" ^( ]' L- C
(3) repeat 9 H- d; L% W8 |* E# c( c
<statement sequence1>;
" W* U2 ^6 j- \! F5 V) E9 ^4 M until <condition>;
# \/ h9 o/ r5 v, k (4) for <condition> to <condition> loop3 ^1 k) n* N3 a: h7 @3 T
<statement sequence1>;6 g: u0 g3 {7 J+ o
next;
* b8 E! a; f% x# q3中断语句: E4 C o& @/ x+ H- [ k. \6 d
waituntil <condition> prio <integer expression>;( { X5 `7 A+ Z E: G* B& K! S
! G: i0 S7 `5 A, r' B) ]: Q9 C# i% e8 X0 M5 t% F! J4 q: @% [
以上为常用的函数！% r- @9 j D5 p3 k
还有很多，如有需要我把资料发到你邮箱里 1 R. P9 j: H. t% x4 ^+ e2 a4 ~/ B! [
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