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发表于 2012-11-13 08:48:12
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1判断语句. N4 X8 Q- K. @1 g+ M
if <condition> then& o% O3 u8 L2 G! X: ^
<statement sequence1>;3 K+ P5 S8 i8 S* I) s
elseif <condition> then- l8 K" \. C8 M* I( L/ ~/ @$ L
<statement sequence2>;! l! p) {$ z& x* W- n$ A- p
else
' q" v |" A! t* ^ <statement sequence3>;1 x2 z/ t* t. K( x% t
end;
2 D: r2 p/ d' E如果分支比较多，用：
! w7 E7 \9 e2 s7 E& [2 N, l. _ inspect <expression>
& B' }* S! `+ V when <constant_list> then
+ A, }6 G2 T5 C$ A* O4 p& b! M+ J2 E D <statement sequence1>;3 c9 N3 W- C, ]2 z8 M
when <constant_list> then% f" L0 n5 K/ }/ n. L/ H
<statement sequence2>;
3 `+ N y8 a: R, ~ ...
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<statement sequence3>;4 n" |) o8 A4 l' {, x
end;! g6 n3 D0 M5 v* D( \% z# @ U
/ \* U5 ]* ~- s3 v: C' L2循环语句
1 o$ L a+ L3 x" Z5 W (1) from <statement sequence1>0 r- q E: H! j. \* c3 J
until <condition> loop4 Z7 H4 d$ u7 ^
<statement sequence2>;, \% g9 K1 [3 C5 l- t% h7 L
end;
: p+ g( v' w) H+ y* e& P: H, a (2) while <condition> loop
/ P$ d7 _1 l, e \ Z& P <statement sequence1>;
Y4 o, t# z+ A9 ] end;; e, t5 p7 d0 q1 e( y) r3 T4 F4 x
(3) repeat $ ^7 j7 b; h' o6 \. ~' y
<statement sequence1>;
1 U' k% q. I; {2 J: N3 \ until <condition>;8 R C+ F' I. _% ]) |7 u8 [
(4) for <condition> to <condition> loop
! M d) W% P0 H7 d; o) o <statement sequence1>;
) D/ s+ W Y: g7 _) q. s [ next;) |; K, V' N: U* d- L+ t) e
3中断语句
, s) z# d& G7 J2 N% J waituntil <condition> prio <integer expression>;: k. X* Z4 r( U/ S
/ p5 y4 H3 \; `2 P2 e d
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以上为常用的函数！: ?# l$ M, U( D1 Q" R9 c* @
还有很多，如有需要我把资料发到你邮箱里 : \: v r+ Z0 w
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