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发表于 2012-11-13 08:48:12
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1判断语句
+ L) |9 F+ n- w/ C0 A! ^ if <condition> then' X- H" x& P9 L' P7 h& r
<statement sequence1>;
/ k. d/ K$ I+ `; U7 V4 w& i2 D elseif <condition> then+ v' B: B& }4 l
<statement sequence2>;
3 q% X# Q5 d5 {1 a5 H+ e else
c9 [2 ~! b$ G9 q <statement sequence3>;/ }8 U$ [& j4 c4 x+ E% l
end;
3 I' \9 z/ T1 L d+ U6 X如果分支比较多,用:. R4 F3 J% y m z& [
inspect <expression>
1 t4 E! l: F/ m9 w# z4 v when <constant_list> then% m+ g7 ?& V7 ~: l% z' x
<statement sequence1>;
$ l) k' \" Q; z! S) w2 A when <constant_list> then/ A1 ]. |( M/ j: ?& L+ a3 C
<statement sequence2>;
) \0 J, ]( e" N/ \# h+ [0 @4 Q ...
0 z+ e7 J7 y# T4 K3 G$ E else" }+ ]# O T& s+ [2 `6 D
<statement sequence3>;2 K; x7 b1 |4 O
end;
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8 A1 D D8 m0 q" a$ }0 z9 e% C2循环语句
@- ^: S. l; \6 v+ W' C (1) from <statement sequence1>9 @$ Q9 _! f4 y3 V
until <condition> loop9 u O* N/ h! |+ U/ I
<statement sequence2>;
5 r! c- i5 O0 D3 U& H! ?" S end;
) C! N1 z+ c% e9 y (2) while <condition> loop7 T: s6 C: s) b
<statement sequence1>;
' Z; M# @/ ?; a end;
8 h% X* y/ F- P, I' j, `! e (3) repeat
: M2 U2 K4 T/ h: D <statement sequence1>;
3 g) n( V/ _" Z1 R. s: [8 o9 K. e until <condition>;) {) o. i4 |1 q5 F
(4) for <condition> to <condition> loop. f3 p! {7 g/ D# h* g
<statement sequence1>;
3 z6 c/ T9 `# f" s( O next;
* b3 f; S5 l4 u/ V3中断语句
% ^- [3 T3 P% ` waituntil <condition> prio <integer expression>;
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以上为常用的函数!! c1 ]- x5 p6 K: a# X. `( Z' n
还有很多,如有需要我把资料发到你邮箱里 " C+ h) t) E f& h7 I4 j
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