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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( N. R/ x3 ^! h$ v! l: `4 `2 ^# v
if <condition> then
5 k' _( y9 o. _# G; d: m* u <statement sequence1>;
4 _# m4 p4 @5 n8 q. ? elseif <condition> then8 l! O- Z4 w! Y3 d% \
<statement sequence2>;& K* m; s. B% x5 {# v3 O
else & v6 Y2 S+ H. r( H
<statement sequence3>;# s: i& l7 c J8 a6 D
end;( S. D( T( O" {, x3 k$ M
如果分支比较多,用:% R7 ^5 d6 z4 Y7 O$ ^
inspect <expression>2 l( [/ n k6 P$ J0 {" c2 Y
when <constant_list> then
" q7 K+ e3 u0 q: d <statement sequence1>;' p4 z4 B- v8 x5 v0 I8 Y
when <constant_list> then
$ q! P9 q2 Z& D; G9 A5 ^# e5 ? <statement sequence2>;/ c* U( v+ G0 {; w x6 r8 H' [
...
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<statement sequence3>;
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2循环语句* }, L% d: O$ c, R9 \4 z- i
(1) from <statement sequence1>9 Z: K: L: m* s/ O3 M
until <condition> loop1 q# d: z2 J2 r
<statement sequence2>;
1 I7 k- |; V4 n( s b, w: k end;, {* W0 f' H: v- B" q3 }& }) c7 E( O
(2) while <condition> loop2 ^7 Z4 G& B! s8 C4 A' s3 ?; Z; p7 m
<statement sequence1>;
5 f% D2 [& c* w8 t: f end;; F! E9 A& H" d3 [; o9 X
(3) repeat 6 a/ X% K& i# r8 G( T
<statement sequence1>;' r* z2 L$ u5 z% ^% Y) N
until <condition>;
+ @& @) }0 X$ I (4) for <condition> to <condition> loop6 x2 ]8 _3 n& F; O2 U9 `
<statement sequence1>;- Q6 ^6 a( M8 M) @, E; b# y
next;% G2 p. A# t! @
3中断语句
3 ^/ t. @+ Z6 U2 [+ ^ waituntil <condition> prio <integer expression>;
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! J- z v Y0 ]+ k0 ^以上为常用的函数!4 g. H3 R& _! f( \
还有很多,如有需要我把资料发到你邮箱里 + Q& ^- O) p& ]7 q4 F A
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