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发表于 2012-11-13 08:48:12
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1判断语句9 E$ o7 ~8 \: A5 u7 \, \7 x
if <condition> then$ t6 h" F+ s1 ?9 h( S/ ], ^
<statement sequence1>;: y; J8 r$ o: ?. h1 i ?, Z: v
elseif <condition> then
3 e; C7 z9 s. J" A* L <statement sequence2>;; I. n, b2 M+ r9 Y% ]# Z. H
else
% R+ c4 e7 ~5 u2 N; C <statement sequence3>;. Y9 e$ ]9 D! ^0 B. N- _ q0 }: ^
end;, w/ E, w2 I( e
如果分支比较多,用:& Q: u* P( Y3 q! } G' F$ b8 Q
inspect <expression>- [# O& L4 d8 V. x
when <constant_list> then
5 J( l. O, j0 c; ^1 e2 h <statement sequence1>;
8 M0 T% P f: D5 M when <constant_list> then
7 A8 F6 x+ m* o' s7 Y0 i4 r <statement sequence2>;1 I+ x1 A+ ~% W9 f' v$ [
...4 P/ x# [ P8 S6 u8 B
else2 Q$ v9 i! ]- x: s1 y1 ~7 M
<statement sequence3>;" {1 l8 {7 h4 O2 ]. |
end;
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2循环语句
% m) d) W& ?9 `# s (1) from <statement sequence1>
! B9 T6 W7 X- e E- F until <condition> loop* `. E/ ]; U' }) O- x* p( H
<statement sequence2>;. B E( Q7 S3 G# g
end;
+ t: B+ i4 [! }8 G1 x2 @ (2) while <condition> loop/ i* `% P1 ?- P1 T
<statement sequence1>;% P' |0 R4 X4 o% q, w {
end;$ S# F3 I+ s3 N. K
(3) repeat 3 G" x8 P' r# ~) x2 C) z& S8 k
<statement sequence1>;
C1 Q5 W; K) @. O until <condition>;
, Z4 H2 s$ }; k/ ? (4) for <condition> to <condition> loop1 C X% Q0 t. }2 `0 ^: R* C9 i; Q3 a" v
<statement sequence1>;' @6 g* M: l4 l. q: N
next;; x1 C: u! @6 I; a3 i! K
3中断语句
( N& h# K" M7 N7 M waituntil <condition> prio <integer expression>;6 @: s3 k2 q, x& E6 r% F
{8 ~0 ]3 q. m/ |% F
* t5 q& H2 e2 ]! }+ Z ^# c以上为常用的函数!
0 K& G+ h: U! e3 h, e* B I还有很多,如有需要我把资料发到你邮箱里
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