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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
6 K& m; `& S" l( ^; B# J if <condition> then
/ y8 R! d' Q7 d( [$ u <statement sequence1>;
' g# \8 y. i9 X$ `# c elseif <condition> then
3 ?! V! T, P. e I <statement sequence2>;
8 I, ^7 s+ R! s/ m( o- w; M2 c; w' H, W else
8 [, P$ q6 q3 a0 ^1 e) q& {4 P <statement sequence3>;0 f5 j- b, V0 I; C9 M1 X6 b
end;
6 }% u- @2 `) L# `如果分支比较多，用：
% \, h- Q! w* D inspect <expression>
" K/ l& X: x8 i$ Q( S# t when <constant_list> then9 P- {' l/ s; E7 O$ `
<statement sequence1>;! r7 a: [1 \% c. g
when <constant_list> then
+ K& }4 p7 m1 u% {) ?; i <statement sequence2>;
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else
5 H) a* } I+ G& l% O/ |1 x <statement sequence3>;
" Y# X E$ `& cend;
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2循环语句
# g ?3 x2 o: l* [$ b! e (1) from <statement sequence1>
, V6 X6 K6 G, d until <condition> loop
1 V. [1 ]; k/ g0 ]! |8 {; T <statement sequence2>;/ f! E- [ l, p7 A3 l1 A
end;
0 ?6 F4 l% r& J k: h (2) while <condition> loop
" M& E! ?4 L! |0 b8 V7 ~9 R( g <statement sequence1>;3 \6 u) F( I3 L7 D) ^& {; g
end;3 f2 M7 o; w; S3 C5 a0 ?4 l
(3) repeat 0 y2 }/ B, H% H) U
<statement sequence1>;( m" h, n$ v# {
until <condition>;* n) f8 R# e" a1 ?0 Z7 c
(4) for <condition> to <condition> loop
, @6 X2 B. M: l" b" |" {7 k <statement sequence1>;
2 U0 H2 l! F* j- d2 ^ next;
. ?- I: W$ g. M( w, W8 b( K" W! r3中断语句
6 [4 P: A" Z) O" D* s6 V: Y waituntil <condition> prio <integer expression>;/ `6 E6 F% J& [
6 G6 U P( Z6 g" G: A0 |3 x( a
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以上为常用的函数！
& S/ U1 A0 f; P* {) d1 {- j, g还有很多，如有需要我把资料发到你邮箱里 9 S# ~$ ]6 F/ L
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