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发表于 2012-11-13 08:48:12
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1判断语句, L1 M. _' _6 n' a' p$ I
if <condition> then
6 @' w! a c* J$ _7 W+ s <statement sequence1>; h, v, k6 N3 ?$ i/ L6 i# b
elseif <condition> then# ?# a' O2 o0 a% _4 I8 x; Q4 g
<statement sequence2>;2 H8 n; F$ T- M. s/ _+ H5 G' F! N" d
else
n% z& k+ P$ O' Y& f <statement sequence3>;
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如果分支比较多，用：
( X. w) Y! z' d2 f: u, q" x8 S inspect <expression>
) N# ?4 M6 ~7 [ when <constant_list> then* H$ ?4 x) J/ X7 r, N( S0 p' c
<statement sequence1>;
$ F& [# W/ `$ _. v8 B when <constant_list> then
8 N6 F3 {& v- m8 G# X, O <statement sequence2>;: E6 V8 V Y$ Z/ z1 p6 K) {
...% Y3 O R2 q+ d
else
3 G& F/ I3 H; D# [ u: e* a <statement sequence3>;/ T7 `8 F" _8 d# x
end;: Y2 d* C1 d! E; A, p
2 n6 p$ e2 l* T! `2循环语句8 m8 E3 M% m5 G- N' n, i$ i5 ^: s* d
(1) from <statement sequence1>
" a) D9 @' y8 x9 J6 z9 u until <condition> loop
8 T4 ~6 N+ S* P9 R2 d8 c <statement sequence2>;: W# d+ j v# O7 }4 [
end;
5 w5 [% X% t4 q$ a5 N; b (2) while <condition> loop
, _8 w; p/ K" D <statement sequence1>;
% L) C' O. @- w end;5 Q* m' M* M# `7 G, k, h' H2 u$ c
(3) repeat 5 [5 G0 F: i6 B+ z, T9 u# I6 I
<statement sequence1>;5 y) @1 e) ~, G) U$ y3 I$ e. x
until <condition>;' ]' H" O1 N2 e$ Y+ T
(4) for <condition> to <condition> loop( m) e: E5 ~6 w4 `! {& Z
<statement sequence1>;' T& j5 g# L O
next;
# k/ }3 I7 N& l& b3中断语句
, Q4 F. e1 k/ ^ waituntil <condition> prio <integer expression>;
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' u( c* g6 W5 l/ E* S, W0 D. e0 W6 c以上为常用的函数！
8 m! w: }+ _2 F0 [4 ~+ R6 k. q2 }还有很多，如有需要我把资料发到你邮箱里 8 S4 i6 g' r: g! v
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