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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 u: P( v1 G6 U
if <condition> then5 N& a5 P e: D" a0 C3 @
<statement sequence1>;
; h0 m% ~ t* q& d! A! Z8 n5 F+ Q elseif <condition> then$ A: g5 h& w# u. H4 e% q! f
<statement sequence2>;
. Z8 j, }" z+ A% [, [6 T, p6 l else
, V" J7 p5 F6 ^. C" a" X <statement sequence3>;
1 ^) X L" Y* Z& W; V# a end;
$ H, A& L8 e4 M: h如果分支比较多,用:
4 H8 r- H$ o) S: U# L inspect <expression>
3 Z1 |+ ^: N+ Y7 U when <constant_list> then
8 Q2 i9 p( B$ J; j <statement sequence1>;+ W& _! n! {7 C! p. T
when <constant_list> then2 W( U% T' K8 ?8 A3 h8 Z: |
<statement sequence2>;
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else
. m, l% i8 b" s! @& u# z8 b <statement sequence3>;0 r3 Y$ \+ j8 p9 `) K; }
end;
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2循环语句
* _) H/ [3 K/ T2 P2 Q) t (1) from <statement sequence1>7 G `; ]6 h1 ]' g) y
until <condition> loop
5 } E0 q6 z0 }9 g/ J <statement sequence2>;. k" I1 {* L$ j! U1 b# `
end;. g' m$ K) K1 m/ N
(2) while <condition> loop
6 I" h& O/ y" z) e <statement sequence1>;
3 @; f5 K+ D" K+ } end;
: `7 O0 B; Q3 \& }" N* r (3) repeat 1 a) n$ ~3 l- Y
<statement sequence1>;
8 |) {" Z& T/ W$ w/ s, s until <condition>;, B5 w8 ?% C, t$ v
(4) for <condition> to <condition> loop& G0 X4 D5 ]/ Q6 M, y+ d
<statement sequence1>;, ], m+ s; C- e& A S4 r2 T8 y, K* T) m8 b
next;
( q2 q+ p5 U* Z6 F3中断语句! O. g8 R+ A/ f, N9 S. m7 X
waituntil <condition> prio <integer expression>;
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; G9 c; h( D0 l以上为常用的函数!
5 ^1 g/ E8 a0 f" [( R( n, ]还有很多,如有需要我把资料发到你邮箱里
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