|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句: R: ?2 i) @8 H2 L8 q$ _. F6 j
if <condition> then8 }( c4 l7 s, \$ C& t
<statement sequence1>;* J& \4 G: T/ Y' l ~* r% c
elseif <condition> then- g" _: n- K; d% w: N! l
<statement sequence2>;. d# R8 b% \' a& _" A; Z, D, @7 f' x6 L
else 8 s1 Q3 ~4 R4 J8 E/ S0 f1 I9 H
<statement sequence3>;" h; _# B2 `- m8 e4 Q3 e
end;9 J' _+ T& f( [1 N* w: y# V
如果分支比较多,用:
! O* p* ^1 B( V% u" V inspect <expression># q2 l/ g" x7 k+ n. c) Q
when <constant_list> then1 X% T: }) V9 J% Q4 @1 V, m |
<statement sequence1>;
0 f* X" e; h& G, N when <constant_list> then
; Z4 _1 x6 j; j* i <statement sequence2>;$ y$ |& ~0 N' T3 {0 |
...5 j8 Z6 E# R' D5 i1 c
else
9 H5 [; q' S( X" h <statement sequence3>;0 J9 t0 X, ^9 ]" p
end;
9 L. C0 d8 G" g+ l4 N* Z4 o, O$ Y4 B: j3 [/ m& n
2循环语句" B6 U' P- D0 q% S
(1) from <statement sequence1>1 Y! h+ r* b5 K
until <condition> loop- R5 R; _& p( F f$ m% [
<statement sequence2>;
& e" ^. o7 I3 z+ v7 Y( _ end;1 ^. H6 R- h3 P+ x8 l6 N' I- \( [
(2) while <condition> loop6 r* D6 c1 `! A# B! n
<statement sequence1>;: U: F8 X( ?- V% z
end;
7 E" U2 a& J( B8 ~ (3) repeat
( V2 `# L: g+ n: i: F% b4 L0 C <statement sequence1>;- B1 G3 C7 f. t5 s p
until <condition>;
. p- D# n: H9 ^/ ] (4) for <condition> to <condition> loop
* Y% ^) b/ _' X# T$ c8 ]' G0 F <statement sequence1>;
& m1 |4 f1 Y: ?: s next;
0 |+ ~, V2 V2 B0 x4 u+ V- F4 Q1 Q3中断语句
( y1 n @+ ]1 c: j( @ waituntil <condition> prio <integer expression>;
- J) `7 k" d) `0 ?1 ?' @5 M3 Q0 y# D7 ?3 E8 u6 F' G! x5 [) c8 `
2 ~- p% R4 }, H7 f8 e以上为常用的函数!5 p9 W! C# `' i
还有很多,如有需要我把资料发到你邮箱里
1 h# r, g/ J& c: R9 `( k5 P1 B/ l; ^2 ^
1 |2 o8 t6 o. h a7 V! s
K9 d0 ~8 @; W0 J& _& Y6 D
! R, S/ T7 u2 B" j. H
* z- ^+ J( I( I( o4 g! [& A: m
! a9 {* x4 e5 g5 Z4 S, w, ~7 I9 E9 b+ b E
, j$ M9 o$ a9 s9 m
, f9 P9 m$ b1 f: _6 `0 c5 t) \
* P$ v& O* N! [1 E5 x2 {! }
|
|