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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
- e& y* T$ w$ `8 F if <condition> then9 D0 G& n6 R1 Q# u- ?
<statement sequence1>;# @2 x/ S" r- {/ s6 q
elseif <condition> then+ T4 ~6 a: u8 l) {9 j% J: k9 f
<statement sequence2>;
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<statement sequence3>;
! j% B( \# v8 e; ] end;
+ [, k V/ m3 K6 W如果分支比较多,用:8 d, M( e; B" G2 B6 Q
inspect <expression>
$ }0 Q4 i% g6 [- C when <constant_list> then5 D6 O) j4 _) \2 u4 i# B9 G
<statement sequence1>;
o3 u: `% B, s {/ L. a; n0 j when <constant_list> then7 Z( v3 ]6 ~ h( d) Q# D) ~5 ?5 S
<statement sequence2>;
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else
6 `. C( p7 c* d) @- O9 |4 D <statement sequence3>;
3 m H3 P% n1 |) i# U, }% v2 o. X9 Yend;" V( v* h4 `! c5 e% B5 k
& B2 T$ R6 [/ o2 q# D' ?
2循环语句& F* F/ c, M* h, }- S; C
(1) from <statement sequence1>
/ v( O' ^* [+ H4 {7 I9 H: a+ b until <condition> loop W# |8 X( i I2 }
<statement sequence2>;
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(2) while <condition> loop( u: _( ^! [7 c( x$ D4 P$ q
<statement sequence1>;- {1 }' i% d' X
end;
' e4 B) T* p( X9 }2 }8 d (3) repeat 9 A) m7 i6 x4 U+ |/ ^' S. {5 H; R
<statement sequence1>;
7 `$ O) Z, \1 ~+ \* K- ? until <condition>;
7 V; O' Q' _! n4 m' C1 X (4) for <condition> to <condition> loop/ O, L/ I0 ^$ w
<statement sequence1>;' F( u7 o! Q A% L' M
next;
$ E" [, Q4 I) \( D; d l3中断语句- R; h4 w V2 f$ x
waituntil <condition> prio <integer expression>;& p. i0 m: n1 u; b M
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以上为常用的函数!' a7 L' p9 k+ o' K4 W
还有很多,如有需要我把资料发到你邮箱里 ' C N9 @5 F4 U+ k( X/ ~7 l
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