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发表于 2012-11-13 08:48:12
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1判断语句
* ]# |3 V; q! Y4 f+ @3 t# a if <condition> then% `# n( R2 w _: `5 d$ [* @% q' d, R
<statement sequence1>;; L- Q$ y# u) p- r1 A
elseif <condition> then
) D( l' Z5 l# ]+ D. B& b! [ <statement sequence2>;
4 F: R! k1 n* W y4 L" r4 c$ k: U else
8 e9 s, N% T/ `- ~6 d <statement sequence3>;
0 @- \( w. I C! V0 d, N end;
9 C$ [( ?' O) H9 Q9 [9 x如果分支比较多，用：
+ ?& }) q- k$ C5 D1 C7 O! Y8 v$ k inspect <expression>: {+ p; D% v; z0 o( y* [; q& e
when <constant_list> then9 U+ e: U* c1 j6 C: ?$ d& }
<statement sequence1>;, ^# e. ]- ~$ T# `5 J9 G" }6 Y
when <constant_list> then
% m. ^/ a' H) x9 J0 f [9 `$ j: A2 ? <statement sequence2>;+ a( Z, v! ^, n3 T5 K+ J
...1 c$ a4 Y0 ]+ i3 k, ^# \) n% U& |# b
else( B% b! f- C& k
<statement sequence3>;
# b8 K& F. E' r: l8 C \3 Bend;
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2 `; S+ z6 Y5 R" N& w" ]8 ^2循环语句: K1 {8 V( k& D% b* _# j% e1 m" u
(1) from <statement sequence1>
6 \! v" O; b& }. d" t" s( m3 a until <condition> loop% {% J: t+ ~1 G5 A" |# F, o
<statement sequence2>;* d# J4 E, G0 D& Z @! T' c- O
end;
4 \+ R, D9 d9 Z6 t6 Z! E (2) while <condition> loop
$ ` b/ K" ]# @ <statement sequence1>;
1 {: n: A0 S; s end;5 g- x+ h" g% e' X+ D- l# F0 u
(3) repeat
, z# b' @6 g8 w& | <statement sequence1>;4 g6 ~7 o7 b, _' d
until <condition>;" Q, m, N" Y( g, E$ a/ |! r9 N
(4) for <condition> to <condition> loop
5 t; u5 h7 z" Q1 u. k2 p& Z# V! ]- f <statement sequence1>;, F: a2 t7 i U
next;
$ ~/ |: Q% x! ?& X6 V3中断语句 \/ ^' N, u6 g/ y1 B+ J
waituntil <condition> prio <integer expression>; b- M* T& m" E; L; b- B
) ]) a! s% ^3 E" E( `
* c" ~: \/ _, y$ l" p2 {以上为常用的函数！
2 F+ z+ u7 y, ]5 ]0 O" C还有很多，如有需要我把资料发到你邮箱里 ) m$ D. P# m# @/ i7 n2 i+ n3 Q
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