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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
- ~# H7 ~4 @. J7 M if <condition> then* [. {# V! v6 `# ^7 d: b. y% H7 q3 J
<statement sequence1>;7 \- Q4 t. i% b' m7 J
elseif <condition> then, @5 x) D. N3 L( a2 u
<statement sequence2>;
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<statement sequence3>;5 `/ F. x: g! H
end;
, B$ O7 i: M. Z/ @8 C- E- e如果分支比较多，用：
" o! F6 Y& a' k. O inspect <expression>
# R* I! ?& F$ r7 L, | when <constant_list> then! y! K3 }7 t4 W: c# ^# a
<statement sequence1>;; ]& ?1 F% i4 J
when <constant_list> then/ Q) A7 n$ o2 b. E
<statement sequence2>;
6 J& D2 W1 [9 j6 G; C" x0 E ...
7 ]" _5 F7 i6 r else
; J' n% c2 r9 E8 J <statement sequence3>;
$ U# Q9 F& L6 ^* q! rend;
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2循环语句* Y4 p- ?0 T& a* u" D
(1) from <statement sequence1>4 i. S4 R( w% O& h: S2 |
until <condition> loop
; ^# R+ V' i) b2 e, W" W8 P) y <statement sequence2>;
0 B/ T# n9 v5 [, B* Z end;
( v' H2 N9 C( U (2) while <condition> loop7 {/ Q7 s2 T a, E2 D6 n
<statement sequence1>;
1 G9 I8 d n) `9 p- B5 ~+ H end;
' M' L( D. u! K$ `, K/ T9 K (3) repeat 7 e# K$ L* C4 ] R# }2 `
<statement sequence1>;. P% J4 p! N* X
until <condition>;2 k& Z3 I; A+ K6 A
(4) for <condition> to <condition> loop! V0 K8 s9 U! V7 p- g
<statement sequence1>;
0 U0 ?. r. K9 O. H. ^/ d next;6 S( j' w: Z2 w; g0 d9 ~
3中断语句
# N O5 F1 u. l* W$ O waituntil <condition> prio <integer expression>;
+ a8 v$ J! w# V- o* r. P. P
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4 e7 J* p$ S; k# s以上为常用的函数！
# v7 k" F7 x+ x. _$ H$ {- e4 S还有很多，如有需要我把资料发到你邮箱里
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