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发表于 2012-11-13 08:48:12
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1判断语句# V. @2 g! ^/ p1 W& O q
if <condition> then. @# j- M! k0 N& M3 E3 D/ k2 V* w
<statement sequence1>;
7 P6 N, ^8 Z+ ` elseif <condition> then, x4 I4 x& o/ H; V. q
<statement sequence2>;
% O* m, s* z3 U$ B+ N else
) [+ _% [ l; m& [8 O <statement sequence3>;
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如果分支比较多，用：: t# E9 X& Q% u4 u9 w* {5 N- u
inspect <expression>
$ x: C E3 m6 c. l6 O8 [3 O4 W Y when <constant_list> then
5 N1 z( m5 @) D0 g) S9 l, i1 O/ m <statement sequence1>;' K! s$ w$ p0 I6 [! K* A2 g0 H
when <constant_list> then
% x0 B" P$ D) b# n2 z <statement sequence2>;8 N8 w* {6 X2 o9 [. b) F4 Q
...# o6 k) K% C: O* q# C0 [' Z" d6 j3 U2 q
else
9 N! Q& A( ^) |& y) Q <statement sequence3>;
: |& ^, G2 Z X; @2 e) r4 qend;
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0 e& S( j. t. W4 N" d+ N2循环语句
& d. q8 H' b: B/ D9 _ (1) from <statement sequence1>
$ Z# g5 j. _% i& K) j until <condition> loop) s3 e f* c) T: n# z1 f( T
<statement sequence2>;
6 u2 f" F) Q7 q" ~ end;; @7 x. {, N9 Y2 w9 k1 k) ~
(2) while <condition> loop
# H% C* S' }! e5 n <statement sequence1>;8 p* v9 w1 w P
end;" ?2 f4 |' b1 }6 P, \5 W5 k+ f6 G9 h: ?
(3) repeat
$ y& x2 d1 W) ]. [6 }! L <statement sequence1>;
. J4 b S3 ~( O! h+ w6 U until <condition>;
( D0 n" Y( J( B$ F& ~. d( r5 Z! q (4) for <condition> to <condition> loop
* R$ A8 F* I2 ~) H9 u; j <statement sequence1>;/ T$ t }" N- H" |+ ]* ~, s
next;0 }: w7 x9 g0 ~& O% ]
3中断语句0 q) h1 b! v# X4 v
waituntil <condition> prio <integer expression>;! ~3 p5 Z* e/ A# e- m
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& e6 P+ p3 U6 c5 [* b以上为常用的函数！
# Z l7 H4 F$ l% n: _" b还有很多，如有需要我把资料发到你邮箱里
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