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发表于 2012-11-13 08:48:12
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1判断语句
( }; j% C A' o# F/ M+ c if <condition> then, |8 d2 a! E$ k0 i$ ^3 X3 s& z
<statement sequence1>;1 q- X+ `5 F6 G) P8 C
elseif <condition> then
* F6 P1 I& X1 t& K- h <statement sequence2>;
: ]7 F+ [7 _! B3 Z; V y) R% N else ( {) i" k2 P! O3 ~
<statement sequence3>;
: Y1 z7 X+ [5 j; I$ i end;
( b# D* B. F- Q5 ^5 A3 V! i# e如果分支比较多，用：
C# D" a; Q7 L4 h4 m; p inspect <expression>
* u5 t" Q. c& Y1 T when <constant_list> then( s# ]/ f- ~4 ?3 @# _5 J9 c+ `
<statement sequence1>;
# \+ m. _5 m% b6 z I when <constant_list> then
8 H; T* ^1 l0 I' @7 F <statement sequence2>;
# E- h" g) @/ K ...
# W; U T. I( u* Z else9 o9 O+ N& a; l( S
<statement sequence3>;4 p; q+ `; q) }9 }
end;9 T3 V& B# g* r: g u7 U
( q) K" f8 Y1 O5 ]' {. |2循环语句
# C& ?0 f9 @/ h: S* x' W8 P& m8 w (1) from <statement sequence1>
7 y/ d; }, n/ P/ w until <condition> loop
7 b' i# [/ K! S- t! d$ ]$ l <statement sequence2>;
, y `+ v, ~; P: X end;
, T, n' Q: l& @/ K+ E/ i (2) while <condition> loop
) R; c7 c6 L; M* o2 g9 a <statement sequence1>;
" Z$ v. x6 }2 o3 H; v end;" Y4 o. j; h$ j
(3) repeat
a y) X2 s I# e# ~+ a/ N; H6 W% q <statement sequence1>;) _8 f8 U$ b/ V- {6 I: \% J
until <condition>;
! d$ v0 v/ b: C5 G* y: `. L6 _ (4) for <condition> to <condition> loop7 {; h" n) V6 ]# [) t$ b& g. b. N" [. P
<statement sequence1>;
, v2 r: y9 U+ M& h next;
2 e) f5 n8 z$ Q+ w: T7 x1 c3中断语句1 ]7 L! M' S" |- z
waituntil <condition> prio <integer expression>;3 `3 }" Z% \0 P) _7 J# y9 T" m
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以上为常用的函数！1 }; |, D: o# i8 E+ D1 h
还有很多，如有需要我把资料发到你邮箱里 # g6 y" z" G! |0 |4 @% N- _# `
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