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发表于 2012-11-13 08:48:12
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1判断语句' x# ?6 |; l: ]* N1 b( r# P
if <condition> then
! N: }; i) N; f: l+ A2 u" n" ^ <statement sequence1>;, x+ }$ k9 i0 S
elseif <condition> then
* Y! k; ?% {1 \( @; d5 M <statement sequence2>;
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<statement sequence3>;
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如果分支比较多,用:
" [7 E% ]! J% L- z% N inspect <expression>0 s6 m6 _ Y* }5 j" P) O
when <constant_list> then- V( w7 H( {' g7 Y; ]7 o/ s
<statement sequence1>;$ |- E- ^1 c7 u* I
when <constant_list> then
+ @. L& P( W% U5 X6 o5 I" W <statement sequence2>;2 l& g; ?: M2 ]3 Z) w
...
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<statement sequence3>;
% B. V1 o* D% S$ T0 nend;
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3 G% m' m! j/ M: e4 D7 f2循环语句
7 C2 t% u" Y$ n2 l+ d! S& I (1) from <statement sequence1>
* |. ~' o1 a4 ` until <condition> loop5 `% f7 V1 S( e9 ~
<statement sequence2>;
* N, v% G: n6 m8 q8 C+ x' t end;( e& G0 \4 p* y0 H/ h* I3 C
(2) while <condition> loop
- Y) j# { W. G0 e' [/ F <statement sequence1>;9 P5 M& F* O& a5 ~
end;! S1 r! K# S% U( [+ i9 U/ `
(3) repeat
' ?1 J3 }9 a, O <statement sequence1>;- r$ d& a4 s3 X) R X3 X
until <condition>;
" L& @ ~% }1 Q0 Z. j (4) for <condition> to <condition> loop ?% |/ `2 z5 w' i- C) v5 ]
<statement sequence1>;- M3 ?3 }8 U; @( @6 r3 Q
next;5 A# K0 c. ^3 A A
3中断语句
? I6 d' S# [2 I: u3 q% N5 o& b waituntil <condition> prio <integer expression>;9 d9 G' ~: C+ ~2 @( i
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# k1 E3 e6 j5 A5 N$ J以上为常用的函数!
+ C) I6 O, o/ t5 ?还有很多,如有需要我把资料发到你邮箱里
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