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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
6 C j* z2 H, t M2 z4 h if <condition> then3 J3 R1 X; w- F( ^
<statement sequence1>;1 C5 Y$ q& i% R( T% U5 w2 U
elseif <condition> then
* P9 T+ y& I# P. g- h <statement sequence2>;+ y; B3 N" C; P4 ]6 Z
else 2 B' Y! f0 Z; [( x! F; G6 c' `
<statement sequence3>;
J& x- @; q" t9 f$ l) x$ E end;1 O i' z0 r5 s) M. _$ ~6 y4 b
如果分支比较多,用:
. s% k8 n5 a* m. h0 \' }- C5 p4 e inspect <expression>, u2 H4 c% _4 N
when <constant_list> then
* Z, `. l; n( l$ B' _ <statement sequence1>;9 {. y0 \6 r: N4 q
when <constant_list> then
, Y. B( I, c2 H+ R1 B) y; K <statement sequence2>;# w, v2 r1 P: D! ~
...) s3 T/ M+ J' ?( g6 P! K# Y$ P
else1 m5 @4 y% p" W7 j
<statement sequence3>;! l" Q; Q) e: O! U2 q+ l
end;* o2 {, [, ` A) | h9 |& @
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2循环语句
* B% y: g1 p6 G* j4 c% i5 V" K. M$ } (1) from <statement sequence1>- {2 O s7 o4 c6 E% C
until <condition> loop
% F( z/ Y) o" n <statement sequence2>;9 I1 J% w% a8 o% _. {& _0 R
end;
- w/ N7 W: `% _' e (2) while <condition> loop ^8 c2 q& i) i) i7 p; _( r3 y, j# J% g
<statement sequence1>;
, c4 r. K. _8 K5 z* t3 ?$ s9 K4 m end; A8 L8 U& p0 O8 x& U
(3) repeat ' e* Q1 y+ f3 E) [
<statement sequence1>;
. ]8 C: d0 H2 D; L$ v: m until <condition>;' m f' i1 v1 D! T1 E
(4) for <condition> to <condition> loop
$ d: C' C5 i$ X; m- T <statement sequence1>;
# k( L1 `( s3 d7 J+ _# c8 ^7 d next; `# N" ^/ C, X5 l* J- }% h0 H
3中断语句2 `2 J0 n. i# v+ u
waituntil <condition> prio <integer expression>;" S* Z$ m" ]3 ~% D1 e) b
8 n' P8 r6 l6 n) Y0 H% o" _. ?
9 F' ?* |0 Q9 m/ L- e4 A以上为常用的函数!
3 }9 ~. W0 a P8 t- k/ ] i还有很多,如有需要我把资料发到你邮箱里 / q6 |" M/ m- Q6 B$ O1 [
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