|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句; T% Q9 _4 j# ~0 `
if <condition> then; u. ^7 ?! Y( R, f0 n' Z
<statement sequence1>;7 B; s9 b) T8 D& f
elseif <condition> then
& Q; l" L. t. u/ h) @ <statement sequence2>;- q, ?& k! e( h
else
1 p" ]' L; D, K: C& ~# v <statement sequence3>;
4 C! e! b$ s& }2 H end;. ?% R8 z" ^1 _
如果分支比较多，用：
9 X) F8 z. q' ?2 o inspect <expression>
" K U! L% A7 h( ] @ when <constant_list> then
. p! T1 T9 z$ _6 H2 a( d6 S( P3 e n0 G <statement sequence1>;
/ j+ a8 K1 j. \' B# q: D+ d when <constant_list> then+ N* ~$ z ~( f7 b7 U( E& X% f
<statement sequence2>;
# Z4 q* D2 k2 K ...
$ z0 k& {2 K8 p5 I3 a" x else- i1 r1 v$ m+ G/ N2 w
<statement sequence3>;' b6 e. L9 }0 |
end;
1 p& m# ~. A5 L- {& [# R
) Q! V# V6 _0 r S! A2循环语句+ v9 z2 [; w/ p6 z+ `3 n2 H
(1) from <statement sequence1>, V" d+ j P+ f2 ~1 \$ C
until <condition> loop! R2 a) r$ U- l1 L* F
<statement sequence2>;
5 A2 L( ]2 I8 p ?5 i end;( g8 c$ o8 \' ?% E2 t# ~$ l% n
(2) while <condition> loop8 ]" I" ^) T4 t
<statement sequence1>;
0 C1 f& ?2 n& q- f. [, K1 } end;
: F) k6 j6 {1 o (3) repeat
- ^, b6 d8 m8 N$ O/ p6 d- s) z% M <statement sequence1>;% M( s" h6 I" s# W4 t, d
until <condition>;- o3 L* U) f4 y4 |$ y
(4) for <condition> to <condition> loop
! s+ h/ K+ ~4 h2 o <statement sequence1>;& j& g( S: h2 ^9 I" m8 b
next;+ _) Z, {! w: B2 l. H# W& d1 d" O3 k
3中断语句( b; n1 S) ^ M; e: E% d( C
waituntil <condition> prio <integer expression>;
/ ^! J/ P3 ^( l" q, G6 S
9 _9 u- Q! | g" [: I4 U
6 d/ Z" U2 D$ z' L9 s, Q以上为常用的函数！4 O- H+ H6 q9 S: L& y$ t6 w; V& s
还有很多，如有需要我把资料发到你邮箱里
) |: Q+ E* n2 {8 h
( X% r1 y6 k8 I1 H7 F: L/ h% ]0 ]8 k# y
; M& m; V6 o I: X. o
0 A1 ]: }8 @; W
* A& d- A# P7 C$ h) J; f+ N9 Y
3 @. t$ _! e% i& ^! [
) I1 q1 j. f1 g! K& p" [& {
" ^. t2 h( Z9 q1 m! K1 E6 ?
$ |, I4 P2 I& z0 w: i1 _/ U ! \+ o$ M$ Y* ]; I$ R, x
|
|
[复制链接]
