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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
5 M9 `, c5 ?! R0 U) y if <condition> then
' Z% L0 ~7 N$ f& J" {! L& C: w! r <statement sequence1>;
+ u3 q8 n! l' N( {- G elseif <condition> then8 R+ Z+ r# |' y
<statement sequence2>;, k0 O0 x$ m0 l- k1 t, [
else
m, J) H3 w3 _8 { <statement sequence3>;
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如果分支比较多,用:
# X# l' K2 E; r+ C( f$ @! N/ J inspect <expression>1 A4 x# N2 b4 \( V: [9 y; e* q' L
when <constant_list> then8 A" l' o1 f5 K) C4 }
<statement sequence1>;# C; H- _# f1 b3 l
when <constant_list> then% m1 t1 f0 W* S4 u; d& M" @$ W
<statement sequence2>;$ G/ M0 G0 s( p, S# V
...
5 l0 |( S( D1 F! v else
# `+ d" d0 w& Y' U( S <statement sequence3>;
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2循环语句
: A9 q9 I, g! ` (1) from <statement sequence1>9 e6 D. t9 I& a: {+ Y7 B
until <condition> loop
, d' W1 ]1 I8 H- H4 }6 p: Y# V. w2 Y <statement sequence2>;
- u8 G* [$ W2 u! ~ end;, D( y/ Z `9 @
(2) while <condition> loop5 ]8 f3 O% t9 k4 C! y
<statement sequence1>;" t0 F5 v8 `# N
end;' h8 i& d, E7 {: V' @+ h
(3) repeat & l. s$ R+ T/ T' P4 w* ~% o5 q
<statement sequence1>;* K; ?: d [2 N m0 I7 c+ a* E
until <condition>;
. W5 D' t/ e! C+ L0 s (4) for <condition> to <condition> loop9 t" P" h7 ?' s' j( e/ T; Q! e
<statement sequence1>;! ~% ?" V! j6 }% B% [+ J9 y
next;8 n* E& | v8 b& H4 T' _5 z. B2 ^( |
3中断语句7 D6 @2 \0 u1 x. L$ ^" u
waituntil <condition> prio <integer expression>;
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: M1 n+ ?4 y0 K. J' T以上为常用的函数!6 ]- N' g, ^4 X9 [! z
还有很多,如有需要我把资料发到你邮箱里 7 B ]) \* |: A7 h
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