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发表于 2012-11-13 08:48:12
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1判断语句! q4 H- ^! I4 C& b f$ v
if <condition> then- v6 o8 I, J* I6 m
<statement sequence1>; z1 F. V4 I/ c3 I
elseif <condition> then A% Y; _, P6 J8 W0 N8 D" Z4 A' ?
<statement sequence2>;' D# S/ r. i+ a7 v: m
else
6 f F9 L( r0 Z l' q4 e0 r <statement sequence3>;$ P2 ]- q# M' g& ~* Q4 ~
end;* [( Y$ o; d" a( P+ @; Q, q
如果分支比较多，用：$ o' k. W; c2 z8 W
inspect <expression>
7 U$ m" r$ w* d( w! H when <constant_list> then) u0 z2 m5 z& ~8 I! r2 O
<statement sequence1>;
$ o g+ [. r2 n when <constant_list> then
" L+ A. U: w; L7 ] <statement sequence2>;
1 I& ^* O7 k: S9 l+ \1 D) j; J ...
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<statement sequence3>;6 E" v2 g0 K& x
end;( n6 m- n/ h3 e/ e4 Y9 g, c
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2循环语句3 m+ `- |8 p+ P; M+ E$ I2 o) z
(1) from <statement sequence1>8 s' s3 U; V" }, D3 W# B+ P
until <condition> loop
# b) z7 S6 v# Q% X4 J <statement sequence2>;+ B2 y3 o: G. Q) G! j4 G' g
end;% B1 n/ q ^7 U" ]) k
(2) while <condition> loop# C7 v, K" A; K' F
<statement sequence1>;
0 m: i. @! C& m$ D. I* M$ d end;
( I+ W) W4 u( x" }9 Z (3) repeat
( b( @ u' c/ P% u5 F& ^ <statement sequence1>;
7 { {$ b* y5 k" Z( p until <condition>;
3 r& z6 I+ o4 I/ i& L* P9 G (4) for <condition> to <condition> loop
# j( C; @0 X3 k5 b4 t& i <statement sequence1>;" B8 O. t4 O& @6 t1 b/ ^1 B7 g
next;
0 b. M @! z4 _* }3中断语句
0 H' S1 p8 H+ U o$ X( Q8 j& @2 } waituntil <condition> prio <integer expression>;
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以上为常用的函数！
$ s* K2 G( R* C/ g& M! E, c还有很多，如有需要我把资料发到你邮箱里 - z' R" l/ ?7 ?
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