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发表于 2012-11-13 08:48:12
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1判断语句3 q5 N& j7 o% W0 q; ]
if <condition> then
1 B3 m8 n, P9 p7 E/ q <statement sequence1>;
4 D- P+ Q( m7 T, Z+ N# @ elseif <condition> then
. Z( H9 q* v% }: @ <statement sequence2>;
. t1 P+ @& F2 z0 L: c8 x/ j9 l5 E& B else
0 }( x# q' ~8 k( i6 H <statement sequence3>;/ \" `( g2 S3 w! a2 e0 g0 n: p# o8 S
end;& M; m1 \ T( v; x! V! L( N, _# Q
如果分支比较多,用:! a2 n" L0 i* i# a8 a$ K2 |9 Y$ V
inspect <expression>6 o2 T* T* o- d' \* O' }8 K
when <constant_list> then
# `" x6 [& J9 E& }0 R5 K, f9 ~ <statement sequence1>; n& Q6 T( i8 s" |# x
when <constant_list> then! o; q9 J) ]; ?+ B7 J- N
<statement sequence2>;2 i7 L. n8 I+ o4 f. M3 Z5 N
...
. ]% z& r+ z% J) \' C7 h else
+ B, U! v7 L0 `2 O' K$ P0 a <statement sequence3>;- K6 F: F5 e# B3 ^1 }
end;# A, I a+ v8 S( Z0 g
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2循环语句9 K3 ?. N! m, |7 S9 M: S% z; e9 j+ Y
(1) from <statement sequence1>" f! ?5 L: [2 D" g
until <condition> loop. W0 j8 r! {9 W3 v; @" a3 }+ n
<statement sequence2>;
3 g; V( X0 @3 ?1 c* R' A end; E K" p) r$ P% `/ u( R
(2) while <condition> loop7 K& k$ y5 b C
<statement sequence1>;
7 j Y' E) G/ L end;# x# q* A: C C
(3) repeat ! R/ O) W6 p& O1 r+ Q0 ?: T6 C
<statement sequence1>;/ X2 D N: J+ I f( v
until <condition>;+ x. e7 a, X/ O1 @4 C f: S2 n& n
(4) for <condition> to <condition> loop
2 a9 ^5 ], w3 o: Q0 Z: g. u <statement sequence1>;
% C/ b7 L1 C% k next;( B# ]3 i, z# U X# ~6 t4 B8 I
3中断语句
" i+ q; L$ g3 S0 H$ y waituntil <condition> prio <integer expression>;8 @/ A1 j# v0 }' v
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以上为常用的函数!) h7 ~- p, r3 @: j1 e
还有很多,如有需要我把资料发到你邮箱里 / f# `% l' [2 G- N1 ]4 @. d2 v4 ?5 I
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