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发表于 2012-11-13 08:48:12
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1判断语句
5 b$ U6 r. k. n9 z if <condition> then
6 t7 i7 l* B$ W( G+ X <statement sequence1>;
8 ]6 x% h* c5 {1 \3 L, j- i) c elseif <condition> then5 E; o1 c8 b3 D5 m9 g. |8 e0 w, l
<statement sequence2>;
. u3 P& b5 c6 H else 4 L' ?. {# k" b5 y
<statement sequence3>;
$ r$ e) ], |. ?/ S8 K end;
% @4 m/ r3 O1 v$ P3 |& P如果分支比较多，用：
/ J, F7 e \3 p T% ?$ q4 L( @) \ inspect <expression>
- m" Y5 Z9 q) s' w" f, N when <constant_list> then
5 h3 a: k2 e0 _1 k" h. @ <statement sequence1>;
2 W7 V ^8 Z3 E. |& l" ]) e7 s when <constant_list> then( u0 u: O5 W! D% D7 T
<statement sequence2>;
) J s, e) Q' m. Z7 N1 z" ~/ S ...
8 J. _- z s) N else
* ?; {( \! W b8 Y <statement sequence3>;, R$ k8 o4 p0 q/ Q
end;' s9 V' i: s2 U% M" ]
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2循环语句
: \0 m$ ?) X% R1 P* `- F (1) from <statement sequence1># k x" V( G6 k6 q! Z: E- |
until <condition> loop: _% e: p0 [! j" X
<statement sequence2>;
; b% L: `0 x+ }4 b8 W, h N end;9 l. `7 Z* b1 B' o, g2 A
(2) while <condition> loop! V& a% y4 x, @8 q- J4 ?% _5 ]
<statement sequence1>;
9 ^; e, ^+ a0 E4 C. Z end;
% g' y' f& {, j5 k/ {5 E: Q& J (3) repeat 2 h! v4 t7 T4 W1 V8 H0 u4 N
<statement sequence1>;2 O/ Z9 ^$ {) a$ ?! H' w
until <condition>;
( b9 {% \: y& t( N (4) for <condition> to <condition> loop
% m, G; H% V) o& W <statement sequence1>;8 a! f9 M& [* s
next;
- d) r- p! K- T! u+ A( b3中断语句0 P1 M) M) e1 x- b- r
waituntil <condition> prio <integer expression>;
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& e5 Y( @: H1 L7 N以上为常用的函数！6 T2 D6 ^$ @1 I c# c( B! {
还有很多，如有需要我把资料发到你邮箱里 1 S! N0 N$ H7 z" |0 _1 D
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