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发表于 2012-11-13 08:48:12
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1判断语句- v$ B2 X5 K7 ^- H& g
if <condition> then
5 e$ j7 V2 T3 L8 h. ?8 ]8 b <statement sequence1>;
& t# I" f2 P" `# q4 L8 l. M elseif <condition> then
% c7 [% W' N( o4 E" T+ I0 B5 a <statement sequence2>;" q4 [+ b) A. f9 r: g, X7 @- i/ T
else
- r) |, |/ P" f& w ^ <statement sequence3>;. E( o0 U, l. J% _! T/ S& U, i
end;
3 e0 G5 v4 P$ h3 g! t如果分支比较多，用：
) D: @$ }8 ]5 I3 C8 v0 Y% |3 M inspect <expression>) F1 ^6 p; R8 q0 K! \* E4 W
when <constant_list> then
+ {2 } ]3 c0 v <statement sequence1>;
1 M5 e* ]+ \, \9 K& O9 ] when <constant_list> then
0 Q+ _. F. @& ] <statement sequence2>;
0 g8 x! g+ e* g0 N ...
. i: F& v( O( ^0 j( g+ C else
" S% p/ S5 o e+ S9 Z( n" b <statement sequence3>;
* f2 f( x- m# u& w2 z. _end;
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& _% I9 A) }; m2循环语句! b5 U4 Y* \: a7 B9 V/ h5 j9 l
(1) from <statement sequence1>
/ z1 [# \% y4 J$ v until <condition> loop
6 o5 ]8 v+ T5 u2 `8 A/ A <statement sequence2>;
( {. i$ [5 X5 p3 Z7 Y end;8 e) W$ }" i5 W" b) d
(2) while <condition> loop2 _2 H2 m. a& w
<statement sequence1>;
. ?2 m9 h1 Q- R5 q: t) ] end;$ T5 ^$ v2 z2 J9 F) {0 h
(3) repeat 9 w: \( b1 z- A u; T* u2 {7 U. u% q
<statement sequence1>;
7 t/ i" S( p8 T, U8 q until <condition>;
8 {: Z% g, t" t" N# V' s( X (4) for <condition> to <condition> loop
/ {+ H: |4 h0 F% m6 Q3 U <statement sequence1>;
n) T4 z4 Q4 g! ?& Q g( z next;
+ b, J! [3 ]9 y/ N( A- R3 l3中断语句
3 X) Z$ S5 c4 M( N waituntil <condition> prio <integer expression>;
6 W" B& O; Q3 i5 m
$ ^! ?1 l7 A0 A0 f: ]
! `! P! Y# d1 \. j$ G; q- i以上为常用的函数！
2 {5 D/ ^. K: H还有很多，如有需要我把资料发到你邮箱里 8 n) t0 X% T! o( K( z
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