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发表于 2012-11-13 08:48:12
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1判断语句$ S, l4 q: G) c4 g* }% |4 M
if <condition> then
6 D! g2 ^9 O! n" V4 l/ k <statement sequence1>;
% m' v2 D6 v( `" Z6 w- M5 E# ` elseif <condition> then, d% p% \* I! G. ^5 J
<statement sequence2>;
* k% @% w" T/ f" G! Q% @4 Y else
6 N. ~7 g3 ?& e& R2 j! ] <statement sequence3>;$ T4 I# h7 w6 V( k! s5 e, {
end;7 a j2 ~" z9 x" W, v* e
如果分支比较多，用：( m, M9 ~ Q. f
inspect <expression>% F; M( X1 d1 ]& H! r
when <constant_list> then: T2 K- v9 e6 s1 P; g& _! |
<statement sequence1>;9 }; w g) h: X
when <constant_list> then
. d3 c- y7 v& H5 O <statement sequence2>;7 N8 ~5 Y- E; L2 a" V
...
0 M0 v) Z7 R/ w. `0 R8 f! @9 b else
% N4 r1 M% c B* i+ B <statement sequence3>;
4 ]! o: ?! o$ k3 nend;
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: r; F& x/ C* b) \2循环语句: |2 v# _6 Y5 _* V7 j8 X+ X
(1) from <statement sequence1>
+ J* P- M# G8 {# T7 H/ l) X& I# I until <condition> loop
* x% D/ }6 }* h7 z <statement sequence2>;
- e- N r' u Z2 C- g0 c0 b( B end;) u- Q! F' \" n C
(2) while <condition> loop, d' [* Y3 i/ ^ h4 [- s2 f
<statement sequence1>;2 N+ n' G# t# I/ q" f& ^
end;
+ C2 \3 W1 a9 ^ (3) repeat
) d i; V0 `7 r1 N' j' n( L <statement sequence1>;
, E" {8 [: u* O# t4 R until <condition>;5 L3 D! J# A' x, o- ^
(4) for <condition> to <condition> loop
+ N$ @. x" {2 c7 ~1 f: b1 p {4 P2 M <statement sequence1>;
: E _; w/ ?4 B$ k( S next;
2 g5 J- n& B9 r/ c3中断语句
# Q* x" j' W- E' H+ ?- o* v8 o waituntil <condition> prio <integer expression>;
6 ^% G6 u$ m% Y) f% b, r4 t
6 S, f" `, r5 T9 ~/ N
- Z" @& s6 g5 G! B8 q' _以上为常用的函数！
& X* R; z- B7 N# e O还有很多，如有需要我把资料发到你邮箱里
$ a$ I* G) q7 h3 ^+ e/ w3 l3 s( J6 i3 p1 i1 M2 D+ q j
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