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发表于 2012-11-13 08:48:12
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1判断语句
5 N9 ?0 t+ Q" r( ~3 Q* g( S if <condition> then
, ~; L, r8 p2 D8 D0 j0 S <statement sequence1>;+ Z( @# [- u, d2 j* q" c6 g; b
elseif <condition> then, d) h" K! ]! T1 ]" _
<statement sequence2>;' @4 @6 r: U8 M. N. Y
else 9 a1 x* y- a( N
<statement sequence3>;
% [8 t, r% \5 V$ x* e" d7 N6 H end; r% p7 c Y8 F" s5 s
如果分支比较多，用：
8 |: F$ X* O; X+ x- g# b inspect <expression>
( }$ K, p3 c: s( y' b- f" | when <constant_list> then
4 Y f; n& v! l2 e <statement sequence1>;
! E+ a) M$ B) q3 ~( z when <constant_list> then* n* g8 X S$ X8 Y
<statement sequence2>;
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else
& ~ v' ^; n4 Z% C& t& _ <statement sequence3>;
# h: f/ d9 |2 g# o1 G9 B/ |" Aend;
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& n4 }# W: n* ]. m2循环语句$ m8 J, x0 L# O: L+ m" D1 W
(1) from <statement sequence1>
% p6 f; n" m2 y until <condition> loop# |0 Y2 M B% n- Z' |$ d
<statement sequence2>;6 [( W5 d$ `$ }0 a5 g* A
end;
& [/ g9 H5 l7 O5 {7 I3 K0 z& s (2) while <condition> loop
9 M& f" L" ^2 Y7 X3 e" K q4 H6 l <statement sequence1>;
6 d. F8 W8 e( U! t end;) G2 |4 R9 g* o9 P* @; T
(3) repeat
" f( E; e8 J l. n" N8 _ <statement sequence1>;3 B `: U. q% {4 `
until <condition>;
# E3 X. H0 u9 t (4) for <condition> to <condition> loop/ r9 { T" n/ D& B# b7 A* v
<statement sequence1>;7 x/ l( ~$ @3 o7 Y6 `5 M m
next;
+ |( S3 d, _# W w! b* z* s3中断语句
, T# ?. U' [ i2 j7 ? waituntil <condition> prio <integer expression>;
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以上为常用的函数！
7 h! V# O* h" v7 p2 Z4 Q还有很多，如有需要我把资料发到你邮箱里 0 C9 q6 S1 z% o- n9 g
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