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发表于 2012-11-13 08:48:12
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1判断语句) H. N+ D/ M* ?$ B6 e8 ~4 |* ^; ]
if <condition> then
0 \: h( B0 Q- i: s3 h9 y/ C# ? <statement sequence1>;" D& b# o4 n/ d5 b
elseif <condition> then
! Z/ A7 Y9 S7 ], ?5 E6 _4 O <statement sequence2>;
- c6 o0 n) J/ v7 G7 T else
4 f% h5 B$ f/ N+ p3 d <statement sequence3>;
) ]+ T0 b/ D H4 I8 N& p+ q end;
. }7 e) U6 G, d& z2 q3 ^. g如果分支比较多，用：% \! W! u7 P. V! H3 R6 P3 U
inspect <expression>! q' O) N6 {7 u' x
when <constant_list> then
, E* u8 S; G* D' U <statement sequence1>;) l9 h4 R1 L( S: C1 \
when <constant_list> then0 X% R' h" s( M
<statement sequence2>;) ]# C Z# M& M
...
+ |- l& G. ?4 f4 \ else
( b" L9 u3 z8 m6 M0 j <statement sequence3>;$ o) d! I$ A8 _
end;
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2循环语句
6 ~8 @: v6 G0 G+ e$ ~0 C% T y (1) from <statement sequence1>& X: N: m$ [5 C* ?
until <condition> loop
) k# E! Y3 x. Y' f" O8 R8 K <statement sequence2>;
( b8 [0 `) J+ P: i8 L) l- a end;! h2 n. _7 d7 b" ~
(2) while <condition> loop# Y. @" z; r+ e; Z# H; ^7 ^
<statement sequence1>;
% e1 e5 W, J2 @0 e5 ~- B6 k! j end;' @" g# H) N) G" n- N( B A- @
(3) repeat
- v; E6 T8 S! |6 ^5 @ c! ^ <statement sequence1>;
6 o% J, Y. I% \( J/ ^ until <condition>;! o! l; ~" v1 C; A" _) S. m
(4) for <condition> to <condition> loop t9 E' Z) ~, ?2 ~
<statement sequence1>;5 g! U6 N. {+ b! ]9 t, x4 D
next;
; Y h/ _9 [0 m9 e3中断语句
. V* R, q0 F u waituntil <condition> prio <integer expression>;& }: ~+ v. K* A6 T' C. n
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以上为常用的函数！
D: Y+ u! L$ G. `, W还有很多，如有需要我把资料发到你邮箱里 0 x4 M9 ~3 ?$ l& B: r
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