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发表于 2012-11-13 08:48:12
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1判断语句& C& y0 L9 E- t# Y; h% r% ^
if <condition> then
! t8 R& v9 }$ o) z <statement sequence1>;" X+ t8 F6 S% h/ K" v; p/ z
elseif <condition> then$ l3 g! f( x" c
<statement sequence2>;2 R7 f! f8 a8 Y: S+ m6 l
else . N% h* Y, W$ i1 M
<statement sequence3>;
; J* M; Z4 g+ d% c7 X3 S) y" h end;. p$ T; O9 t+ A! a4 _
如果分支比较多，用：
6 q9 R6 o2 B1 M" @; e+ p inspect <expression>: B6 E# K% D* Q" \* p {
when <constant_list> then
( S3 n6 j& ]9 j; u, | <statement sequence1>;
6 w& I. K7 N: M' f1 D when <constant_list> then* c& j" }$ b2 v9 L9 m& O
<statement sequence2>; r2 b* ?' ?2 L/ D4 S3 R
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else
: w4 Y! K' W" M! V1 g9 y* g2 R <statement sequence3>;
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2循环语句 z- _5 j8 C* ?5 k& o& d
(1) from <statement sequence1>: C o' G! O) L% I
until <condition> loop- J( g/ W, w5 t* ], V( W
<statement sequence2>;3 {$ D n% q% @, [" p3 O& b
end;
6 i- A% Z7 S3 j& c+ U (2) while <condition> loop
& S3 H, e7 t# F; \( ^8 ? <statement sequence1>;+ s/ Q( `- Y* S+ ?3 S! K
end;
. T8 Y2 P9 z0 Q7 j (3) repeat 7 f6 q* e6 Z) E4 v6 }" l* O# ]- E
<statement sequence1>;
6 M2 H0 \ h1 L/ W& g. S7 v; o until <condition>;3 `" I# s' }) P( {! y4 o0 N
(4) for <condition> to <condition> loop
% g: c5 h0 N9 s: @6 [6 F5 U1 o <statement sequence1>;
% J' |2 b% h8 c8 r next;
) p b3 y( O3 x* R# ]3中断语句
) o% u5 K: }$ m' L waituntil <condition> prio <integer expression>;
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/ @' W! n* h5 p m以上为常用的函数！& D# H A+ Y4 G1 A+ J4 O! S0 }
还有很多，如有需要我把资料发到你邮箱里
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