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发表于 2012-11-13 08:48:12
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1判断语句/ S! @6 v3 d* q" ? Y8 F J8 B; B S
if <condition> then# w' p, A9 A) _
<statement sequence1>; I$ ?8 ?# P- M( l1 ~" }1 k( [. X
elseif <condition> then. B. l% m( o% U0 q: I4 W$ B
<statement sequence2>;
+ x0 m" u/ O/ W# c else
; |- y* H- \/ }, z( P1 {, ~2 t. l <statement sequence3>;
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如果分支比较多，用：
f3 ]$ V! g7 P5 F! v! d inspect <expression>
2 j$ O9 y) C; P5 x when <constant_list> then2 h) |5 y* t( w; q. @; v, e
<statement sequence1>;5 R: Q3 u% ?/ J! \& A/ e& E, F4 ~( N
when <constant_list> then( R# g# m3 b. w# F5 q6 w
<statement sequence2>;
- k6 n$ j# l) |8 I6 b1 `. h4 q, D { ...
: }2 p! N! Q* f+ u' ? else
: s& s& y+ O; |. ^2 o <statement sequence3>;. F# W! A5 h8 a0 h2 R4 |3 F# ^$ {* W
end;+ s, G" o) c1 d& ?1 _4 c2 v# N7 Z
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2循环语句1 H' m( ^! ], b5 ]$ y5 T
(1) from <statement sequence1>- I+ Q" n$ p- R% l- q5 A4 a
until <condition> loop4 [7 r' Y' {7 A7 d* N, z! o. w
<statement sequence2>;
* i+ c. S; m: k3 A/ o5 V end;. Y3 q. c ~+ H
(2) while <condition> loop
# ^( K* W X2 Y" e <statement sequence1>;
0 v C, K) j' U# K% I end;9 N( m" X$ f3 y& V, K9 S1 D( {
(3) repeat ; j. R1 @" C5 i( U
<statement sequence1>;* W, @% w6 r, N3 A
until <condition>;
$ R/ c4 Q" o8 j) Z* c; @ (4) for <condition> to <condition> loop/ d9 T: s9 _+ S: C6 s, f& c% T
<statement sequence1>;
; X( h- r. d; {6 e7 V9 B( n2 K+ n E% I next;& J/ L% T: }/ B. B* N# n
3中断语句6 Q6 O' a% N* T
waituntil <condition> prio <integer expression>;6 T3 y7 n3 w0 T+ V7 u
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6 l- f- G! Y2 F8 F以上为常用的函数！, p& h* G3 E* E: V
还有很多，如有需要我把资料发到你邮箱里 ) c) }, l0 G1 ]2 I# B
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