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发表于 2012-11-13 08:48:12
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1判断语句* y4 T, K v$ i
if <condition> then
% S; x# I' ^# j3 Z* r <statement sequence1>;8 Z" L# K. Y7 S- r" Q6 m
elseif <condition> then8 [% X9 a$ W% ?& ]7 A
<statement sequence2>;8 B) B3 g- }7 F% P* [
else 4 l7 s/ p* N# [) \' Q
<statement sequence3>;2 k6 b; Y& @- P, W
end;
1 h* X3 h# Q. t8 T' S3 ~如果分支比较多，用：
' [7 Y5 X2 L/ ?5 k- O: ` inspect <expression>0 }3 C4 y$ O% m5 v$ ?
when <constant_list> then" R6 y) f; r9 `& u( T+ X# T' B
<statement sequence1>;' G4 n/ W/ l K8 u1 ?
when <constant_list> then. ?) j2 r* E- g) l( k) E
<statement sequence2>;$ a3 k* d8 ?( z7 N
...$ I$ }* v$ z0 q2 m% e9 e& F& f) I
else
0 Z+ k; X' T2 I5 Y q) _* d <statement sequence3>;0 X1 X$ w C8 B& X% b* ^
end;
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2循环语句
* G! a5 Y$ g! j: [ (1) from <statement sequence1>) L/ f( u7 n0 X$ G
until <condition> loop2 [3 f$ i. F. s
<statement sequence2>;4 P& X' s7 B$ K
end;
+ ~; z9 g1 Q5 b4 Y `1 E' I7 f (2) while <condition> loop
' S" f: }6 \: L z5 F9 ] <statement sequence1>;6 [9 S& Y0 |5 w, e: E2 d0 o" p4 e, B
end;
2 M |" l* P! t e5 e (3) repeat 0 o7 e1 B- D0 E! v. b
<statement sequence1>;
5 G/ ~5 K5 ?; W' O0 W" S until <condition>;, A5 ?$ H6 I$ F! f; Q/ g5 f% x
(4) for <condition> to <condition> loop
$ f& q. }$ Q8 ` <statement sequence1>;' @& k- @ _1 c$ O5 l9 O5 J7 Z5 }
next;; L0 F4 w3 o: h/ J6 C) n, T) S; S
3中断语句
. g5 }1 o! o4 D! t0 ?0 m waituntil <condition> prio <integer expression>;% M( [+ |2 |5 x+ ^4 ~9 }# Q9 V
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以上为常用的函数！8 ]* s3 H# s5 e8 y9 j
还有很多，如有需要我把资料发到你邮箱里 7 A( `: `% S7 \7 c
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