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发表于 2012-11-13 08:48:12
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1判断语句6 ~# e7 Z$ n7 ?3 o* Q! ~
if <condition> then
% p- d |+ P9 O$ O- | <statement sequence1>;& Q# D! o; `! ~9 @& M' \ }
elseif <condition> then0 E( o. J. b( Y0 V8 k! b# V& d
<statement sequence2>;/ H9 ^1 T' W' F
else
. E+ l8 B& }2 W; B3 L <statement sequence3>;
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如果分支比较多,用:
! m% F5 [1 a0 ~. F# l inspect <expression>4 @0 ^- f( F8 V, y M0 J; Q
when <constant_list> then& W8 c" p1 I% h5 M
<statement sequence1>;0 b* s3 B% ~! V* G- n6 [( @
when <constant_list> then
6 } A% t! _9 p+ h I <statement sequence2>;
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else& ]5 ?. `& [ i' h! f0 d& d9 d
<statement sequence3>;
% Y* }. l2 {1 ~end;
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8 y1 a# o* o) b. u' D. W# ^0 B; Y1 h2循环语句
: a% y$ g8 f& g5 r/ N (1) from <statement sequence1>
5 x3 P* s' c: V/ [ until <condition> loop. S9 C( m! U% T K4 d! p
<statement sequence2>;
- R. L& s6 G# y- G/ V end;
) l! j8 [* h& n% E (2) while <condition> loop
$ @5 b g* o, z <statement sequence1>;* [3 I- K3 C& A" c% o
end;$ b j9 ?* k5 Q7 r8 [; s/ }
(3) repeat
8 x5 }; _) K( r* E; l4 k8 g <statement sequence1>;
T, r f, A9 ?& V until <condition>;
* X% ^) y. l: c( P& r& E! ]5 ` (4) for <condition> to <condition> loop
4 n- I- w0 [& ^0 d- \6 A <statement sequence1>;# t* g1 j" e( q7 d
next;
6 Y: ?8 r. d& h" q3中断语句
" o7 J3 i" u1 _; A% ]0 Q# I waituntil <condition> prio <integer expression>;
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4 j6 C3 h5 n2 L {/ S+ ^; \以上为常用的函数!
% `1 L. E# A# ~4 S" z2 \还有很多,如有需要我把资料发到你邮箱里 1 A" S* l9 h/ f& L
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