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发表于 2012-11-13 08:48:12
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1判断语句* f5 H# }6 v' E* d% i% d- G& X
if <condition> then0 m: B; x8 I4 k B! G% O
<statement sequence1>;4 B7 c$ ?, G( h6 _- L& Q8 j
elseif <condition> then
) Z4 Z( Y8 w0 K/ i <statement sequence2>;
L7 y7 t* S/ D3 V else
. a1 M1 v7 p1 e$ o. f# z; B1 | <statement sequence3>;
4 i- ?9 B2 \& f# M( j' {, T/ w7 K end;4 g/ s# B: L2 I8 n; |0 q S( W
如果分支比较多，用：# E# }0 g% G7 K; B" o
inspect <expression>8 v. j" k& ^7 }
when <constant_list> then
: }4 i m( t# L" J+ w- a <statement sequence1>;
* c+ Y& a6 u1 c+ W3 S9 g2 X when <constant_list> then2 n7 M( g- ~7 ]2 G+ L$ Y
<statement sequence2>;
+ { {+ L9 @# A$ G: Y* c1 w* b! c ...# w2 ~( M2 h& S
else" N) Z. ~9 g# o2 U! v" }
<statement sequence3>;
! ^) E0 @8 p! ~$ yend;" |! |0 f* v* r! e c
X& A# x7 U6 f) n2循环语句! W+ x3 ^* D0 [4 N8 j0 i: D
(1) from <statement sequence1>
. W$ h) `, a8 M3 H# j6 t8 C5 P until <condition> loop. p! f+ R( C8 X$ U8 ]
<statement sequence2>;' T8 a# _; I+ @& X7 ]) s
end;
# L9 R' ~9 L% W( ~2 S" W, ^; D (2) while <condition> loop
5 w# B- V7 _ }$ D" A8 Y <statement sequence1>;
1 Y! ~4 s2 W& `- j: k8 m! c* f! d' Z end;
* M+ g) \; Y9 I9 V* P6 j# o (3) repeat m- `2 \( p. J" f
<statement sequence1>;
8 T4 r1 Q5 _7 X' M4 {$ e) s5 ? until <condition>;1 g$ b, E7 |5 h8 n
(4) for <condition> to <condition> loop! a+ J+ x o# ~2 d7 ]4 V1 A2 v W
<statement sequence1>;4 `$ |$ B1 f, @. {2 Z1 d
next;
, Y6 E& A/ ~' k$ U* F) ~3中断语句5 P w1 E8 w! b, u: ^1 [
waituntil <condition> prio <integer expression>;3 i3 j% u$ q3 N4 u4 e
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以上为常用的函数！
4 M. n5 @0 Y" y8 N1 C) o: n6 F还有很多，如有需要我把资料发到你邮箱里 $ x9 `2 z# v; `5 y+ h2 }
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