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发表于 2012-11-13 08:48:12
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1判断语句; j9 d9 _) Z% X0 o. O) ], y
if <condition> then
0 u0 f2 _% h- m$ b* Y <statement sequence1>;
3 W! m9 c6 V2 r2 { elseif <condition> then3 @& p7 b( ^# H; R' S* z# y! X) i
<statement sequence2>;1 J C$ j! w. e, V
else 2 k- C* `+ b- _
<statement sequence3>;
5 V: z# \! q* S; d# e7 k end;
/ K8 I! a% [5 o如果分支比较多，用：" C+ |# |( _7 ?
inspect <expression>/ d" X [* j( m! p/ B
when <constant_list> then; H+ F, N0 y2 {! {' j: D; q/ b" n
<statement sequence1>; f, B9 d, F: M+ y1 t( D1 Z ]+ ^
when <constant_list> then
1 l, V7 d) q! v" k" Z8 v <statement sequence2>;5 P2 }( I+ e; X8 h7 x
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else
" ~5 p+ r( O: b8 O: ]9 C) k <statement sequence3>;
% I- ~: A7 C6 f7 T' `end;, p! R7 Z2 U4 u1 K
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2循环语句
; T% {2 N R! k (1) from <statement sequence1>
# s5 E( v! E. p& H( R; x until <condition> loop
3 s0 l7 g4 X8 \3 Z8 l <statement sequence2>;, o+ }( W8 d6 c! y8 j
end;
0 K( m" {! _8 _ (2) while <condition> loop
$ B! ^6 @3 C5 V4 A) Y" T" n <statement sequence1>;( Y: r1 } \) z, {% b2 m3 h
end;8 X) P5 m! s. N: o" D/ J
(3) repeat ! y! H3 V* A _
<statement sequence1>;. ?: [, A7 d) z Q3 u4 y
until <condition>;0 _+ X8 }0 d& d% M, y4 R) M
(4) for <condition> to <condition> loop
- B1 v3 v4 i8 ~) D- O <statement sequence1>;
( H& ~1 _ l/ n, a! v5 [6 P next;
- _, ]' \4 q$ }3中断语句. {3 q" t! B s+ r6 J. L
waituntil <condition> prio <integer expression>;
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# j+ D. T) g; H以上为常用的函数！
0 Y K7 @& ?/ y) e. u' {还有很多，如有需要我把资料发到你邮箱里 4 ~0 d8 p* N# W( c: o/ N6 n
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