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发表于 2012-11-13 08:48:12
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1判断语句; o7 t" p/ @1 E7 U5 x0 j
if <condition> then
$ {3 N* T/ A6 J6 [ s5 \ <statement sequence1>;0 P, j) Z6 m; z' a) a7 M
elseif <condition> then
3 y3 |! X4 Z; q& j$ f0 P2 N <statement sequence2>;6 A1 z& p% {8 T( ?# v
else ) o. b( D2 l0 P w/ [% v1 @4 L
<statement sequence3>;
' r" V* g) P8 t2 y1 s3 a end;" C( C* ]8 w# f' R6 D$ _
如果分支比较多，用：
: c, C3 u! C3 d L/ G0 y inspect <expression>
. m9 D: S) N* a$ W" m$ u& f1 K, I9 {1 j when <constant_list> then
2 g7 b% y7 U) o) W% S <statement sequence1>;( u0 X1 U+ ~, ^% S3 z- i
when <constant_list> then
! Q3 p' q" S! S5 @ <statement sequence2>;
" z2 J I# [" a# t ...
) ]& S6 _( w8 y. P else
+ L$ w& a. i! ^ d <statement sequence3>;
) b$ H/ ]+ B1 z3 Q/ Eend;
, d. S& T! E/ ^! N9 r$ E6 G" e7 a
/ d v- c6 I- W2循环语句
( F& q" g% b1 M+ h (1) from <statement sequence1>1 w: P: e$ m) U7 ?# N
until <condition> loop" f) n+ b# d! N
<statement sequence2>;2 X( \& U) p6 k: |8 a
end;& I: K4 }. D# a* I# W, f
(2) while <condition> loop
! ~, k4 w3 |4 v" u) B& \ <statement sequence1>;
6 y% b2 v! q5 I end;: ~9 U" m* X& ~; X
(3) repeat
' V) }6 d1 n) l. C: @ <statement sequence1>;8 Q- h6 F1 z( E6 c [9 P% F
until <condition>;
1 d6 U9 Y" b( d6 ]4 \! ^ (4) for <condition> to <condition> loop
2 y9 O# z* T% i& H <statement sequence1>;
( u; P- }2 Z" ~6 Z! ]3 S next;; j S& N; s) l+ T$ }6 `, V8 T
3中断语句
$ k# s4 j! Z! t) X% q1 [- `, h waituntil <condition> prio <integer expression>;
+ i, x0 l$ G* O3 n Y$ Q: o2 e8 D: y4 O/ A
7 t; t- \+ n4 w7 f以上为常用的函数！
& [3 l* a- e8 z" [ u$ S% Q还有很多，如有需要我把资料发到你邮箱里 5 I$ }8 o3 d* ~& U/ k3 |+ f p
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