|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
6 c( o: q9 L* t2 i# L/ d if <condition> then. Q' q! p* {7 f3 b! q9 U* {" N+ p
<statement sequence1>;4 L$ G; l {; ^+ r: I8 n. L* J/ |
elseif <condition> then
5 S" ~% F8 {5 S+ P. s% D6 N. H7 [4 a <statement sequence2>;' h+ N$ S5 d; C% d9 g3 d
else
8 ~% E# m/ h; S. p4 J7 A0 ? <statement sequence3>;; `& i" K+ P" a9 _! T( V& c9 X& t
end;
; u4 ^: `. X P; m/ h0 X如果分支比较多,用:
; b# j d8 L( |8 K( ] inspect <expression>
6 ?1 r: N% i# F! O* N* u when <constant_list> then
# K* N: r- s- L+ ?: x <statement sequence1>;5 p; w {7 N0 r: _+ P0 u7 ~
when <constant_list> then7 B! H# L- a ~" {; Z
<statement sequence2>;! n( `! ]6 l. I, B
...
: T; t! C4 A _ G5 V6 w else0 R. [ u# d8 e* }8 d X3 b2 \
<statement sequence3>;
1 f$ Q# n m0 K$ ^% Lend;% |6 w# Z [, X) q& H" [
1 X/ ?3 ?0 F% L& ?3 W2循环语句
- ?/ c1 l* \! U (1) from <statement sequence1>; ~3 h( r* F$ \$ O/ A, Q& F
until <condition> loop4 x) a2 V5 i3 D1 y/ I
<statement sequence2>;
+ z5 q8 I( ^9 b end;
9 S8 y* O. v* q& b' } (2) while <condition> loop
5 |; M# c4 s* c# j" I <statement sequence1>;
5 B- u! @3 |- O- b/ B9 E end;
% I& F# Q' P0 M- V+ D2 g5 y( v* x (3) repeat + f& w( l; d% V: H
<statement sequence1>;
. ^8 {9 U8 k7 U2 U; V$ M/ m until <condition>;+ d5 |; s B: X: i( J; M+ P" U' K
(4) for <condition> to <condition> loop, O- y! U" o2 V* i8 p) T. S: [
<statement sequence1>;
. S6 j; o7 W! f8 S1 t, w0 ] next;& l( {4 W& b3 |* J5 B) `! y/ i0 M
3中断语句
6 _$ _$ `# L3 n. p# c( E waituntil <condition> prio <integer expression>;
- @3 P0 k" K: b: ]' r! d) V5 x. L7 i+ w& w
6 L6 S2 F& h9 O1 ]; E! u
以上为常用的函数!: G+ ^ y4 t% t+ g
还有很多,如有需要我把资料发到你邮箱里
/ _, o! H" `/ f% s! a+ G
% T q+ a: P* [- G0 p" _! z
1 P0 R. J/ ^% C6 B- q
1 J6 a% J' Q, F3 ?
9 b( F% C7 a/ S* |0 C% G2 }3 I3 o9 Q8 ^ z7 |
6 a9 `! d( m: `5 P8 L9 ~& b
/ O6 r5 J1 m4 v& H* V8 _$ b0 w/ E/ i8 n' n7 V2 S. B- T8 A
: H- U! i- }4 m, X" G : }! N8 o3 o# r- S2 O6 @
|
|