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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
6 t3 x9 `/ u/ y! w; a if <condition> then
7 I2 U. J4 B4 o u7 t <statement sequence1>;
' n+ `; {5 v8 i' I1 ^1 H- z' A4 S elseif <condition> then @- U7 D) W. G; D/ `8 l0 V, f
<statement sequence2>;: o' \1 F. _7 p8 I0 L
else
. v+ g% q/ E- O, [% F <statement sequence3>;5 G5 E" b; M- }2 k6 ~* D
end;: D4 [& M. e% {% R' T
如果分支比较多，用：/ U$ @( e# ?5 p; d
inspect <expression>
' A. Y9 N$ `; Z- F. y5 f when <constant_list> then0 o6 D& w% Z3 q1 e% w- k
<statement sequence1>;
% _3 S6 N9 |3 N* h when <constant_list> then6 I& Y% [# g4 v: V2 ]3 j9 J1 w$ P
<statement sequence2>;/ E' ]+ M$ M! c5 W1 \2 Z# O
...
1 }5 L/ H& D; t2 h+ P' O' p! V0 z else( w z" j$ V7 [" W8 H1 ]
<statement sequence3>;
' C" y: ]1 q) n, x" Z& i6 v# x8 zend;
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2循环语句
" v- v g) F, o$ G" ]. \) o6 n3 e (1) from <statement sequence1>0 y! }0 W: F+ j& Y( _+ q; u
until <condition> loop
6 s1 Z; d" v' o; \2 c- m4 p% n$ Y0 s( } <statement sequence2>;
$ u* r" T/ B7 p end;& B5 |. K' b! s, @1 a7 J
(2) while <condition> loop
0 ]8 _+ K( p5 B- A/ D <statement sequence1>;, s/ o! z$ s+ b4 U
end;
& T% X$ o/ O9 o0 K/ v (3) repeat
' a e* Y: q7 O( c! b <statement sequence1>;
6 V* l5 z/ c* M& Z: l, _ until <condition>;
' l. J; w" W7 @: P' C1 o (4) for <condition> to <condition> loop
: o* D D* s2 P! e& J) W <statement sequence1>;" }4 _2 d7 _% u/ W/ C
next;: \: c9 h! M3 }% A; b7 H3 N
3中断语句
2 y) S1 C5 i1 B7 k% ?9 d( Z waituntil <condition> prio <integer expression>;
( i) }: ?% U- Z5 t+ s# ], Q# Y% U+ C3 G
- \6 n8 f6 `, f8 o K以上为常用的函数！8 a- l5 Y1 g `
还有很多，如有需要我把资料发到你邮箱里
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