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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
& i Y6 o5 x8 [8 m* f& l6 T! G if <condition> then
/ C: \. Z8 }& @1 s! |; Z <statement sequence1>;# {& B1 q/ d- p( q; o* B
elseif <condition> then# f+ ]' ^4 t1 G) r4 U4 P
<statement sequence2>;7 F7 m/ D, y$ l+ |
else
, Y1 T# O/ Y u( d8 n: K <statement sequence3>;
1 P [2 X* i1 g" r" r# w6 z$ c3 B end;
/ P4 m3 N1 c' h如果分支比较多,用:% o6 a- D) c6 I4 T( s8 z0 r& j" w
inspect <expression>6 \$ Q: i* }/ T, J9 V5 p
when <constant_list> then
5 f' |* R% B: t/ N& i <statement sequence1>;) @0 P9 y/ ]# J% U3 r( Z0 d
when <constant_list> then9 ~7 U( X( w: B( g
<statement sequence2>;
9 e2 ~$ ^. L$ ^) ] ...
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<statement sequence3>;
: [. \( i. g' iend;/ O6 \: |" f6 L# R0 d
) r0 m7 N y: {& M9 z2循环语句
+ b4 @9 e) n+ d (1) from <statement sequence1>4 t O* W3 _1 n9 ^% N Q% K
until <condition> loop
6 M7 O) y) D6 t4 N( U, w! _ <statement sequence2>;# x; `2 W, D: _
end;
0 H$ A( ^) e/ Z x w n5 A (2) while <condition> loop9 l' E- }3 @1 D' Z _
<statement sequence1>;. [; n# U# W+ W" n
end;
# q+ z, h8 X7 N/ [ m (3) repeat
0 {8 `, N- j# I8 [6 f <statement sequence1>;
0 [3 M: H$ n1 B( S: H2 f" q6 x until <condition>;( F/ d6 j$ x* u$ O, t1 h2 A
(4) for <condition> to <condition> loop I% W9 X; w8 W; q
<statement sequence1>;! M. i0 c+ j) p) Q. t8 ~% i
next;( ^3 H& F$ `4 E$ [$ D- L
3中断语句* e) o$ {- w9 @2 ^( [1 d
waituntil <condition> prio <integer expression>;
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7 P2 A7 T( t$ U' j( @# a. ~以上为常用的函数!
* S+ K; ^5 v4 ~还有很多,如有需要我把资料发到你邮箱里 3 X; v9 X* N$ f
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