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发表于 2012-11-13 08:48:12
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1判断语句/ w# t/ R, ~0 i- e
if <condition> then+ e! r- u! q& s; | v3 d/ t5 _1 h
<statement sequence1>;$ P/ Z. {1 c! B0 z; }3 b% u
elseif <condition> then
" P" g+ k3 V, V# B' f L3 h4 S <statement sequence2>; N2 f! M' A( i- u
else 1 \' ?8 O2 C- }' I' T* I) F* A
<statement sequence3>;
7 P( W! L, K( u5 Q7 q# T end;
9 P; i' U8 x" f: A1 l3 J如果分支比较多，用：
. `; c6 l9 p) D$ f1 t" M) d inspect <expression>
" o+ K- Y& a/ f8 t/ @ when <constant_list> then9 G; r ]$ |; [7 v
<statement sequence1>;
/ j6 b# G# a" g when <constant_list> then* X: \! y' m6 j3 y1 }' L
<statement sequence2>;
" e4 ?$ \, i& n' S L2 w% @ ...
7 l/ ^& ~7 y* W& a- d# f# U' f else
2 T0 f6 J8 d- [3 @! m& l) r <statement sequence3>;' X6 i5 w g8 G7 C0 P9 m
end;
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2循环语句
S; l* T6 s. T (1) from <statement sequence1>8 e( d& K/ y: W& h! n* ~. X1 d( d
until <condition> loop
: H$ D& p+ |( m; h1 k( M" ^8 h <statement sequence2>;- A" g2 J! u5 a# u
end;1 {* O7 ]* S) F8 c
(2) while <condition> loop
/ s) I4 s$ E f( i; S <statement sequence1>;
* ^" \( [% H6 j1 s7 R! R4 R end;
% h+ N( N, k' p: _4 }& y* O (3) repeat
+ P3 n4 d/ e& i6 ?" |) M/ C <statement sequence1>;+ C$ k6 ~0 |5 t! ~
until <condition>;
& H9 G. L6 l0 E (4) for <condition> to <condition> loop! G c" s0 D( T! Z2 [' B
<statement sequence1>;' r# r8 O9 k7 z. T3 A9 i
next;
# @( G9 X: ~( u+ N2 @1 e3中断语句
# G/ |# _( Y' ? waituntil <condition> prio <integer expression>;5 m$ w9 M0 l7 r+ q" h
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) R1 w" f/ B1 u; Z: P: s以上为常用的函数！6 o* f! |5 u! ]( m( L! t
还有很多，如有需要我把资料发到你邮箱里
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