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发表于 2012-11-13 08:48:12
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1判断语句. K8 x$ r) ~, a9 _3 H9 L
if <condition> then
: ]5 q, ?: Y: a) m# U: o& ] <statement sequence1>;
. }# c6 j% W8 g7 Z+ j$ h elseif <condition> then
$ y8 P8 @' ?( u3 D <statement sequence2>;
" m; q( A/ ]# A- ? else
+ ] a i$ z: @/ ?; Z, B <statement sequence3>;
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如果分支比较多，用：
1 i0 I$ y4 Z0 c8 H R2 x z inspect <expression>' _2 \" m Z$ [( N
when <constant_list> then
4 K; k( E3 S( C# T% y! C <statement sequence1>;3 @2 J! u0 _; h2 s5 M6 m5 K1 a
when <constant_list> then+ o2 Q! _1 F9 w/ W+ b
<statement sequence2>;* J4 g: b( |' V k/ p' v$ y. R
...; \$ W* p) r7 @1 b. o2 q! t. P' p
else
$ T5 A6 Z( V+ w6 c* }- y <statement sequence3>;
. Q6 ^) M" E V9 L, uend;
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2循环语句
+ n% [1 @8 m7 G }$ Q5 w' q1 C! x% B, g (1) from <statement sequence1>7 m$ p% i9 d2 _1 }
until <condition> loop
' o/ S) d2 _5 k9 L1 a1 P1 f <statement sequence2>;4 F/ v7 s' K( A% }
end;
1 `/ Y7 [# j L, \6 {! K! |+ X& b3 ~ (2) while <condition> loop
% p. z& \4 ~" ? <statement sequence1>;. Q8 y5 ]) i: a9 `
end;
% K i3 Z5 l& H (3) repeat
' R3 u/ M1 w9 i/ s6 Z3 p <statement sequence1>;
4 v r- t+ `9 I% O8 h1 H% d until <condition>;
7 R* a( w# z4 d1 p; I (4) for <condition> to <condition> loop" ~) Y" _1 T9 F. X! R
<statement sequence1>;
1 N7 I+ K ?3 p: Q* I6 t+ P8 _ next;
% j% x" i0 g+ S* v$ [ _3中断语句) f* N. a! d; Q u$ [
waituntil <condition> prio <integer expression>;# i/ W; Q& i4 e2 J3 f0 E& X# k
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以上为常用的函数！9 H/ J+ a5 s5 r6 ~4 Z
还有很多，如有需要我把资料发到你邮箱里
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