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发表于 2012-11-13 08:48:12
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1判断语句
/ B8 B% `0 \/ L; k$ X if <condition> then
6 D9 `6 A1 Q4 I2 I$ K$ T C <statement sequence1>;
+ p' G" D4 \9 m" b4 X' Y6 ] elseif <condition> then
1 L$ `+ Z6 _ d* F! P7 E <statement sequence2>;: j6 V" d- I9 I, c0 Z
else
/ V1 Q- `$ Q) \$ S1 E& v3 D5 J/ v( ~4 C <statement sequence3>;5 N0 C* y, S* b+ g1 t
end;) _0 J6 b, ?& i7 X* K$ S* j* a
如果分支比较多，用：
4 }" [2 ]) N* T0 n( u R inspect <expression>
% ]& T6 i( ~& a1 @ when <constant_list> then# i- i+ L* J! y; _% G
<statement sequence1>;
% n2 N: Z) _+ f [( x- `, E- L when <constant_list> then: W2 ^$ b+ B) L% k6 E
<statement sequence2>;9 Z; |& I( {/ Y: q; d
...$ U1 @, `/ _3 g4 ]; X/ X8 H
else' B3 | f1 l7 ?3 ^. [& j
<statement sequence3>;
* E" F* t4 z# j2 c! tend;
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% q" R1 g% x3 i! Z s' ?8 B7 ?6 e2 W2循环语句
9 k+ [/ t% G5 z3 i- H5 H Y0 h (1) from <statement sequence1>) T% [2 e. b4 |2 I' C; |. W
until <condition> loop
* h2 X% D* S8 h5 L, R L <statement sequence2>;4 f g1 D! z/ }6 ?: I j3 g
end;4 `5 V3 g. V6 y5 l [/ J4 B
(2) while <condition> loop
. o) p- c$ m4 P; X b2 ]# {$ m <statement sequence1>;
! ^1 t9 d, A* L9 m; Y" ? end;4 w1 a) L3 [# `4 Q, F" T/ Y: p
(3) repeat L& N: v% c, |) o
<statement sequence1>;
, ~% W b# d. h2 _( G: G: _ until <condition>;0 @! g6 {- t" B5 a @
(4) for <condition> to <condition> loop- F: `8 p7 N3 X, ~2 R
<statement sequence1>;
' m* z$ O1 N5 {/ T next;
# _9 i8 f `, M9 b3中断语句
1 i e/ f7 O& s H3 E ^ waituntil <condition> prio <integer expression>;* R7 Z3 g! S; K8 B8 E1 I
4 u' U9 t4 N( Z8 M6 g3 {
0 x. Z9 Y- N# D/ \. z. `
以上为常用的函数！
4 f. D0 K1 d9 M& ?% ?还有很多，如有需要我把资料发到你邮箱里
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