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发表于 2012-11-13 08:48:12
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1判断语句
& A" @2 ] ^: x6 l3 l+ A! j5 ? if <condition> then8 c. j' {" y- x. j: H- v b
<statement sequence1>;! f9 _: {8 M( z- [2 j( g7 W# Q
elseif <condition> then. C3 U9 N0 n8 P2 t
<statement sequence2>;
' u8 A( L& }1 P0 B else
$ v2 v' O: r1 z9 o: @9 I <statement sequence3>;
* l" \7 k7 z3 L8 [ end;
8 P& v4 E* I! Y, @2 c5 C& A如果分支比较多,用:
H+ T+ E+ g% T6 R. M- H4 J inspect <expression>
3 B6 v# F) ?, Q% G( J* x when <constant_list> then
- ~* p% F4 ?% v( y1 r7 b <statement sequence1>;3 |' ]: k# l7 t
when <constant_list> then4 i; M0 n( n2 M& X+ H6 {- p5 I1 x
<statement sequence2>;/ W4 b/ O2 E) ?( h& I; L
...
* i& ?- d3 @ U, A; S else
+ D) B& d' p; x! T <statement sequence3>;
* \) k5 e) O$ G3 G5 U$ cend;
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, {1 `3 v" y9 \/ a2循环语句' v d3 @- P9 O8 D
(1) from <statement sequence1>3 v7 ^+ }9 W0 G$ b3 }! o
until <condition> loop9 ~, F- x. v4 T0 ?' R( _4 S
<statement sequence2>;
' H- o+ Q& ^% t7 Y end;
- G9 M: [2 ~; N (2) while <condition> loop
7 R" f4 |! S) ], o$ F <statement sequence1>;
5 t! @) z( |3 l# @4 A end;
; o0 @7 \! T8 l q (3) repeat
$ R, V5 X, l! a, X$ F <statement sequence1>;& H( i5 x: q. l3 s$ o1 F# Y( f
until <condition>;
2 Q/ V# P& ?( z; N (4) for <condition> to <condition> loop
8 S1 Y8 g8 E3 c5 r3 O9 | <statement sequence1>;( i3 P- @! N! I$ K3 ^
next;
: E$ O0 F! v9 h5 S3中断语句
( R+ D: t- K. F+ l' P2 U waituntil <condition> prio <integer expression>;
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; V1 X( h9 d7 I7 ]1 G# F) F ~/ b以上为常用的函数!
2 r; J1 Z' `, ]2 E还有很多,如有需要我把资料发到你邮箱里
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