|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
- a" v% K6 m7 C7 w! {9 T if <condition> then5 z! L; `+ ^+ a* O6 b# q4 S
<statement sequence1>;
5 }8 O9 `7 i* l! {3 u elseif <condition> then
' z# M- w' c, H: d) p <statement sequence2>;1 [6 K; h- c3 V6 ~; B: T) M* \
else
' I; U, F( I6 C3 C% | <statement sequence3>;' F( A' ^' m$ Z8 e$ Q0 R
end;' }0 C/ Z1 r7 F N9 P9 r1 M, w, C, u
如果分支比较多,用:
* [/ y( _4 S6 i: k$ r0 k9 X inspect <expression>/ e, \# s/ a G# K( K5 _' @
when <constant_list> then, L0 E1 x4 L8 u0 z- _! L. S
<statement sequence1>;
5 n g4 Q E0 w! Y" e) I% D2 B when <constant_list> then
4 ?) [! E4 Q+ i. H# u% A3 E <statement sequence2>;. f3 I; {0 ^# a; q
...
6 s2 s+ F& B# u2 X6 ] else
/ L7 d) f& {) q" b+ } <statement sequence3>;
/ M$ m$ I! F1 }4 }3 nend;
' t3 m: s j2 L$ Q8 @ @ r/ i( V9 Y3 h- W4 D' y
2循环语句, |1 D# n! g* U( x: ^$ p P
(1) from <statement sequence1>
5 m6 M" D( N% O3 q until <condition> loop
, e n$ N! i/ Q8 {- L% F0 B/ l' o <statement sequence2>;
* ?9 J. c: f! h- P0 F7 y end;
& l- ^( m& v% ?/ J2 c; I3 D, I9 s. w (2) while <condition> loop F1 N0 M- H8 s- |! ]% X
<statement sequence1>;
4 }! p; a. k* y end;
^% p" e, L- U7 P. c7 P (3) repeat
, m; U. p1 D! E; e1 n' ~: i! p <statement sequence1>;' M* W5 p& {8 b4 z; r* R! l( X
until <condition>;
/ q3 n2 B8 q3 c! L( l2 X' n. m (4) for <condition> to <condition> loop- ]! ^- n/ G+ \& a1 } @
<statement sequence1>;* I+ d7 f5 d6 k
next;! j$ z4 O% J: u: Q2 R/ H$ `
3中断语句9 L/ [# [ H; Q& M
waituntil <condition> prio <integer expression>;
" v) ]9 s8 _' z8 ^* e* R+ K1 k# `2 \
* W( v: o5 U& c7 A, z
$ G' c* e5 A& h" a+ R8 k1 l) l以上为常用的函数!: j. k- D6 ?. b
还有很多,如有需要我把资料发到你邮箱里 ) l- o1 F3 L5 Z/ p2 b
3 m9 n+ H. a q; a# k) ]' o @3 `/ @7 A; F
5 c( K, o/ E( K6 T/ u
. U, R8 Z7 g3 C; m0 B4 d) r
; ?5 \. g, N0 G! B/ C8 R' R( v' M+ x' ^& v, f" v
/ B+ N3 l. O# m/ J# r
7 X4 T1 T) Z/ Z8 u3 G& C1 m5 p/ l/ _* C. x% L' C
1 z* l4 W- D* O& ]9 j4 K5 C |
|