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发表于 2012-11-13 08:48:12
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1判断语句# W& N6 G! d! U! t t9 [) n
if <condition> then, v0 ~+ ^' j5 |0 E: ?
<statement sequence1>;
' ]3 D( l& I+ \5 t: ] elseif <condition> then* J4 [. ]% {8 M1 x
<statement sequence2>;) s6 s& N) l, q9 p
else
( I- H# J$ p- p8 @: j. ] <statement sequence3>;' ^/ M% Z! L' W+ |2 s( a/ s
end;5 N! F" o' e# ~) ~, o5 `* P( o
如果分支比较多，用：
. U. @# N/ Q& g; A; S" W inspect <expression>
* T2 e0 I! K5 U# c$ | when <constant_list> then
$ w+ D, p- Y* X+ z9 b <statement sequence1>;* ]' O3 s4 l' ]6 B; p
when <constant_list> then. _: T3 O: D7 q. [% f1 K
<statement sequence2>;/ C2 K! s9 s" _( \
...
6 `1 V( Q9 K. d9 J3 @7 W else
& f* U$ a' g& } t7 A; n* L <statement sequence3>;+ N; O6 {, {& P9 |3 h
end;/ e2 t" n8 @6 G2 g" E( e9 u
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2循环语句5 i8 e+ o( @2 j( d/ L9 m
(1) from <statement sequence1>' W6 ^5 ^+ e' w5 ^0 l* L( t
until <condition> loop
3 u# u0 \0 ~" b2 a' C/ r$ D <statement sequence2>; a8 }; r) S; v9 P' d
end;' C# i8 i% L% d$ Q7 [, V0 a
(2) while <condition> loop7 A! h' j r9 Y% {8 S
<statement sequence1>;5 }0 V. @ f9 ~: i8 G
end;5 ?( ~ P0 O' }0 @& B5 `' ?6 K* P n& J
(3) repeat
. ^: |' e5 s. l) e0 a <statement sequence1>; g2 P0 r2 t' \) N* g' m
until <condition>;" b: ? w$ z8 {* a) V9 I" d* S
(4) for <condition> to <condition> loop
$ g+ e# J9 _( r% r8 V <statement sequence1>;( f- U, L( @2 c' P+ k1 J8 T
next;6 e5 s6 O9 M* C0 W
3中断语句
" P' z M" ]. \5 ?, S; [; C waituntil <condition> prio <integer expression>;
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以上为常用的函数！
% q! T" b& P' S0 H) w# N9 k% r还有很多，如有需要我把资料发到你邮箱里 * {0 s1 M8 r# g5 H3 S! v
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