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发表于 2012-11-13 08:48:12
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1判断语句
, X/ f: w$ X) L; M# F7 V8 w if <condition> then, \5 w' j! B, `: u! B
<statement sequence1>;
+ P1 ~6 D& V0 u; p" x elseif <condition> then
$ d( t( y8 d# X6 x' Q: a6 y <statement sequence2>;: {4 l# e$ O% ]2 {8 G1 [. k
else
$ d1 D' m) E, H; H& J+ \3 V% L <statement sequence3>;! x* `; R* A+ h& h1 v5 ^, `
end;* A& h9 J h/ O' T# ~, h0 L V
如果分支比较多，用：
4 H* s8 k. d# L6 f inspect <expression>
7 R4 E! N! }3 [* r4 { when <constant_list> then
9 n, O4 ?5 a2 f( V1 V: |" {) F <statement sequence1>;
- B h `; `' s6 Q) o; z O when <constant_list> then/ i5 d& ?- Y- x Q: M( g
<statement sequence2>;
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else+ C' ]( I# B+ f. ^, r
<statement sequence3>;
/ m- o. \: U4 ]4 q8 o7 f. j+ F7 ~% ^end; Q# v; ~9 }- |$ F u
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2循环语句/ }2 W4 v& b. g% _. [
(1) from <statement sequence1>
3 L: |% d5 n2 z! [: L/ }* X until <condition> loop# q7 a( Q" u, S, E0 l
<statement sequence2>;
+ k; A5 k4 w2 N/ ~" _; T N end;
+ B* E I: H: c& s5 J (2) while <condition> loop
/ z! X7 L' G2 a. w) K2 ~5 @" r, F <statement sequence1>;
& G2 v/ h5 j' N end;- r$ y+ N2 V; K# r' b* g+ t6 V! x$ L( u
(3) repeat
$ A* a4 n7 F. j# ` <statement sequence1>;
2 a1 A, D4 l) B4 i7 S* F until <condition>;6 S9 t* |7 K5 L8 I% e
(4) for <condition> to <condition> loop
- Z c( \0 }: E/ d# |: s <statement sequence1>;
, W/ {$ i/ ?; i8 \ next;6 t Y& ?1 }) V
3中断语句% u& c# D/ Q0 E1 S8 N
waituntil <condition> prio <integer expression>;% i: N7 L- w `$ k) g4 F& m; w
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以上为常用的函数！
/ j3 J2 m! `- f还有很多，如有需要我把资料发到你邮箱里 $ |+ q) P+ ]' w, G3 c' U) R
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