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发表于 2012-11-13 08:48:12
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1判断语句
# r+ b$ B' |2 C/ | if <condition> then
! C0 F8 `! c3 Y- u9 s) T8 Y <statement sequence1>;! v+ u3 A: g, V" H
elseif <condition> then( ^ Q9 _7 R. ]1 u& g
<statement sequence2>;
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<statement sequence3>;
3 y! F( v' v6 l end;
n3 u+ n8 I D: F7 j: d. c4 U7 s如果分支比较多，用：
/ ~8 f7 r/ ]4 H5 d7 n& R inspect <expression>6 p; `( n% U# u5 }$ S& c& K
when <constant_list> then
& d4 t: i# w2 }! }6 g; v <statement sequence1>;# D- y0 R' Y& T; Z2 p! g4 Z" c
when <constant_list> then8 M& m- k- b. c+ J+ Y/ `
<statement sequence2>;9 {$ N% d( R- X/ L# z2 s7 R& W
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else9 L% C7 b5 M6 x% P; a: s3 y
<statement sequence3>;. [' Q1 b4 h1 F' D! J0 s
end;
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$ \# l& V# G+ W2循环语句
8 b7 K M+ C& L; x$ m% ?( D4 V4 b (1) from <statement sequence1>
$ Z: T3 v6 O, F8 U; o until <condition> loop
5 s) g9 ~4 G1 k8 ^( X' u! X6 M0 x <statement sequence2>;
# H. i6 p: Y2 R8 g' l8 e ^, } end;/ e- h5 T) o5 q- @/ v
(2) while <condition> loop' W5 [! u) H2 l% g2 B" F& K
<statement sequence1>;/ l+ ?% ?, }6 G! | H- C. o, }
end;3 y0 q/ f% F4 p4 h* [! {3 n
(3) repeat & m# O' G* ]* D% k3 Z* t
<statement sequence1>;9 B& k8 s/ N' X, D4 P3 H$ X
until <condition>;
4 J# E6 W8 u- D5 q1 `$ k' c Q! j (4) for <condition> to <condition> loop% _* N, F9 X' g. d9 J' h
<statement sequence1>;
7 x* c4 s3 q* }: J9 Z& i next;) X$ h1 U; G* q$ P' i
3中断语句
6 O2 h) m2 a; {+ G4 N9 r" n$ I* d; _ waituntil <condition> prio <integer expression>;6 \/ p& K4 a0 D
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以上为常用的函数！
' q- I0 k$ ]. a# j6 a. Y2 r还有很多，如有需要我把资料发到你邮箱里 6 C. t# X. K0 p- O% P
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