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发表于 2012-11-13 08:48:12
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1判断语句3 _; K9 H) V# W: b+ V7 R
if <condition> then$ g2 R# p6 T3 g! s" W& s
<statement sequence1>;4 m( Z- T( Y/ d) V( g3 M- }
elseif <condition> then
* w8 M0 q3 m, Z) L <statement sequence2>;2 @# U1 F0 ?+ C! b8 E
else
3 M/ }/ i- b9 Z/ l2 L6 a& G <statement sequence3>;
/ y3 B4 T0 P/ j5 \8 u, \5 r/ O' x- ^ end;
' ]# D+ E I) \1 s+ e. q如果分支比较多，用：
k. E* r4 l. }; _5 x- c" m$ L inspect <expression>6 w- K" n C" @: ^9 O
when <constant_list> then
: g, R" W" x% c( P) c# F( m5 S <statement sequence1>;
4 M! P6 `* F" f' `* W when <constant_list> then
0 b. U# b- N( x: c1 {4 f7 t, ^ <statement sequence2>;$ k* p8 v! W- P4 O- v5 U
...# u2 J' \1 N" G4 w. u9 u6 ~* `; t2 N7 E5 z
else Y8 m& a8 l- f4 k" o, x. M6 w
<statement sequence3>;: Q8 r. C% T- ^/ t: |
end;' P7 H" U6 K$ i+ S4 P
$ c# w: J& w) v- E0 I: c2循环语句
* i* W8 c+ D9 k) i0 b1 _4 c (1) from <statement sequence1>" a7 J! X; T+ j |
until <condition> loop
% X' }. j6 A# C" r5 C/ z2 H <statement sequence2>;
4 N( `( ?6 J, j8 H- B) d# s end;
3 W5 B) {$ n q! `! F$ b5 D (2) while <condition> loop
# Q$ \: h. x( h5 J" k+ @6 H0 ] <statement sequence1>;' L% B- U+ m1 M' D
end;5 ?! e k. Z! A' L
(3) repeat , q7 {& w0 P6 w" H, |& B
<statement sequence1>;
6 ~# M/ U; ]# H% w until <condition>;
9 ?/ C: w" _# J5 Y& ~) C. p: v& @# { (4) for <condition> to <condition> loop7 P( L* A$ H, G1 |+ l7 ?- w
<statement sequence1>;
- O% Q0 b+ b" Z) _* N7 n+ |8 Q+ `. S next;2 ~6 b/ [/ F* ]& @
3中断语句
# m$ r8 Q+ M2 k- @8 L7 y waituntil <condition> prio <integer expression>;
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以上为常用的函数！* _$ k) P! a% S4 u6 ^
还有很多，如有需要我把资料发到你邮箱里
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