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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
3 [+ U, {& V9 y* j, l& F if <condition> then
, [) K2 J, w; ?' l+ K2 @7 e$ m5 E2 J <statement sequence1>;- W' _$ x$ D: o, }
elseif <condition> then
* B# f4 U6 O7 n6 ?7 F2 k9 Z6 f3 z! ? <statement sequence2>;3 W0 f: I/ K- a; F
else
N+ S' L; x: f+ ` <statement sequence3>;
) F0 _ q5 m0 @* o0 m end;3 `# M; V3 Z }$ G9 B. K+ A
如果分支比较多,用:
: k1 C5 Z. j _/ q, E( A inspect <expression>( ~! P7 y1 P* ?+ p
when <constant_list> then
3 T8 _, X8 o: e <statement sequence1>;
" ^+ ]& E! r0 D9 H when <constant_list> then/ t0 b+ Q1 Y; |1 y: g- W1 Q; d
<statement sequence2>;
3 D) [$ ?9 y& p) B ...
2 G% z/ E; i: Y) B7 t W7 `+ \ else
1 ], W$ k% q' Y4 Q <statement sequence3>;) Y9 C% q; N* F' W9 `! A1 F3 i$ U
end;
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2循环语句
5 d- E& U6 _* q0 N2 @, f (1) from <statement sequence1>
% [5 K1 o" a0 }( y$ { until <condition> loop
- E8 C g, d" t. a9 b W9 q <statement sequence2>;" l9 M7 h8 h6 [9 Q+ D5 d t
end;- A+ T/ p; E! N- s( D
(2) while <condition> loop9 D z6 b1 d1 n8 j: H& K' c
<statement sequence1>;
, c% @& b* `/ F1 I% ]/ L end;
+ z8 u% Y4 H9 P$ B2 y! l7 o (3) repeat " M8 Q; d. `# N
<statement sequence1>;' |. H9 J' G: m2 m# j, U' m, E
until <condition>;4 Y! L e! @/ }& H, J; \
(4) for <condition> to <condition> loop# f* i* L2 E& W+ z8 d. [, i. ~
<statement sequence1>;
! J5 u; t+ c4 A6 x* U2 [# U+ J next;
+ O) X8 Q% Q) o8 `8 M+ ]( y3中断语句
+ y8 P) y! x9 R g waituntil <condition> prio <integer expression>;" X( Z- |# Z3 @# t
. C8 F' @! K. o7 `
1 s: x" X* _- }% w% q# |) s8 ~以上为常用的函数!- O) U$ f" K! ^! [7 @% w; Z5 G/ }
还有很多,如有需要我把资料发到你邮箱里
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