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发表于 2012-11-13 08:48:12
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1判断语句5 I! j8 z7 U T4 L: A8 x0 T
if <condition> then! {6 w9 U" [" E1 `; T/ l" }1 |
<statement sequence1>;
* w0 G* r/ d2 {7 l$ A! ` elseif <condition> then7 _+ W% F" N3 ?3 ~/ C, y; T. _
<statement sequence2>;
7 L6 _; Q, v- l" g1 k else
% S& `1 p, s T& x$ S8 R! g <statement sequence3>;
: W* s4 h1 M$ e/ t, d end;
" W$ s( p' p0 b' w; E如果分支比较多，用：! _1 m6 h3 l5 ^9 I1 U3 K
inspect <expression>
* N! _/ Y ^: A& C; N. Z when <constant_list> then' N$ h$ ?* |% V" }0 o
<statement sequence1>;; h5 P, O4 `4 [9 h
when <constant_list> then
7 ?3 A9 Y- e1 \6 Z) Y/ c5 v# s/ X <statement sequence2>;
3 N' G7 J+ @1 j* j8 N5 [9 u, o# m+ G$ \ ...
$ P. c6 ], n: L, { else
& g2 W2 `( @1 [9 G* z H8 o <statement sequence3>;
5 g4 Z# L4 J$ G$ Pend;& H X, c: u8 D
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2循环语句
& R6 ]( c" \0 k+ a+ ] (1) from <statement sequence1>
# d/ H3 M- k& a# Z. t until <condition> loop2 e8 v) P0 U. t' |) y3 J8 N
<statement sequence2>;
0 ^4 z9 w9 s0 p8 v( f end;3 A" P% K" Z4 y, }1 Q
(2) while <condition> loop
, K9 n2 z/ G% B M) b5 s5 t <statement sequence1>;
6 z, g: t: B! p end;4 D7 ]" c8 y* T2 a4 Z
(3) repeat 5 I# i" G) R/ m% j8 K# c
<statement sequence1>;( O- q S: U2 d. z0 ?$ [
until <condition>;
' d% P* Y7 a* v2 F (4) for <condition> to <condition> loop
; P# {! q+ V6 H* v; p6 D <statement sequence1>;
# v' V- S; F2 P2 D. x4 f2 O next;9 m" T, y2 n$ Q8 ]
3中断语句
' I I, t. y" u5 j7 } waituntil <condition> prio <integer expression>;, V, a9 g( I; z+ O5 g9 e0 \
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9 K2 v; q* L$ p, e! T以上为常用的函数！
7 v/ N8 D. [3 ]9 _& ?! X+ o还有很多，如有需要我把资料发到你邮箱里 . F; o6 Z$ @& D7 _
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