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发表于 2012-11-13 08:48:12
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1判断语句6 S7 ~+ f* b; t1 H Q$ z
if <condition> then) G; A2 ?# r+ [( S$ C8 p N
<statement sequence1>;
8 @# i0 s5 ~/ u! k/ Q elseif <condition> then% X1 ~! w+ u4 {: `4 Y4 U" N" M4 \
<statement sequence2>;
2 n: M W F0 s: p3 { else 4 Q2 X d6 ?# q% @/ }' A
<statement sequence3>;, D" A6 r5 R3 F* d( ]2 g3 W
end;' h, o' @( {8 v0 p& f! x
如果分支比较多，用：
3 a- w+ l( p. \- }- I4 N3 w5 S( ~ inspect <expression>+ q* }1 J. T% N5 a9 c) f
when <constant_list> then) x9 Q' F8 P* {6 N+ ^+ x
<statement sequence1>;' e& `: X, s3 b# v
when <constant_list> then
) M" U/ [4 t5 c+ E: s, N: l) p <statement sequence2>;
, f/ l- [7 [; g+ W% Q' D( T ...
6 J' }, l4 ^+ w0 F8 Q else
% ^' k0 Q" N0 S <statement sequence3>;
9 b1 X/ S7 W9 p6 Y+ ^end;
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4 a& E8 z2 V& @7 ]3 N$ _( U2循环语句
" u2 a- |# ?* B8 J1 S5 X$ ] (1) from <statement sequence1>: h" N4 r' i# P+ g+ C
until <condition> loop/ j W4 I* h& p
<statement sequence2>;
* d `% a- I+ w5 n, e3 ? end;
' G' ]0 b `: ]1 ~/ X (2) while <condition> loop
3 p8 A$ X: }) M# [ <statement sequence1>;
% |( F6 D# @4 T. Y& m% P end;
0 z& ]4 {1 K9 s3 @; ` (3) repeat 0 Z$ o2 C5 u& Q' Y
<statement sequence1>;
. ` P1 }4 s% q2 T5 U, U* x until <condition>;
; k& F4 T' ]+ l! v! j5 x (4) for <condition> to <condition> loop
# r8 B- Q; u: O) T: ?0 `5 [ <statement sequence1>;& ?1 L! E# t0 _
next;1 i4 ^* O& @) K; s; ?7 p0 P
3中断语句
0 ~+ E) h+ x" V0 j: q- v# m waituntil <condition> prio <integer expression>;# I% P( K( _6 K0 o4 Y
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以上为常用的函数！
G Z; A0 a d$ g还有很多，如有需要我把资料发到你邮箱里 . m$ m/ r, Y+ ?4 {& g2 _7 G4 @
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