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发表于 2012-11-13 08:48:12
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1判断语句* |* M# m, T/ b8 ]4 O9 D9 }( c3 u8 U
if <condition> then2 T/ s0 p: t* N8 C7 P$ z% f3 E
<statement sequence1>;2 K# K3 N% x$ U P$ u
elseif <condition> then, [) a" [+ A/ t/ c1 j
<statement sequence2>;
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<statement sequence3>;+ c/ f( X, F3 u( l+ H* y/ n1 j3 P
end;/ `8 Z4 H3 ^1 y0 G5 e
如果分支比较多，用：
( b* R8 ^7 w! i inspect <expression>
1 d, e; d; _, W7 v( A- z when <constant_list> then
" L8 r! {" B8 V1 b1 F <statement sequence1>;) H: h/ z) _! _$ t# s+ q' l+ D% K
when <constant_list> then. a4 r- k! _2 `+ o4 L2 k
<statement sequence2>;
, O6 ?8 i( u' f' W; ~ ...
! p! j. _% k, `9 w* p' c else
2 W; O5 H1 Q+ }0 i% i I <statement sequence3>;+ D0 d1 s% ]" U, E; G( B
end;
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2循环语句0 {; H0 Y3 X0 d# U9 n$ `' m* L
(1) from <statement sequence1>
# a: R' D: P+ I* O% i! J* m until <condition> loop
- a3 u" G$ k& ^" ?: t O <statement sequence2>;
) G. K# `+ {1 i' R* E0 Z# m) v end;
$ P# d+ T8 q: J! o (2) while <condition> loop
/ p1 g1 }, C/ C <statement sequence1>;* i& m7 i2 ]' O5 ~7 A
end;: c1 \) N' j7 l' M" d
(3) repeat & }; M2 L& K' @
<statement sequence1>;. O" z$ ]$ B6 W. Y
until <condition>;
& N; k! Q) h& q" A7 o (4) for <condition> to <condition> loop& c8 H$ p# a% n7 }/ f0 A
<statement sequence1>;
- M1 ?# m' z( x ~ next;
% Y0 X$ Y1 C" i" O3中断语句' y0 X7 P8 K# l" m
waituntil <condition> prio <integer expression>;
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2 D! t x* d( P p7 a% a以上为常用的函数！: n) A0 a; @- Y. ?' Q
还有很多，如有需要我把资料发到你邮箱里 & J. E- `8 O" B7 } q+ Y5 N
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