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发表于 2012-11-13 08:48:12
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1判断语句3 h# ]4 J0 \0 W$ \% A. h Q
if <condition> then& u# |6 @5 I5 i' u; y3 f6 f# A+ f
<statement sequence1>;" U U) Q% e* U4 C$ F% _* c1 i
elseif <condition> then
- @. u0 }0 T$ D x- A. k <statement sequence2>;; p$ s/ S; ~1 Q9 T/ T: c/ y
else 2 ?1 R$ x' d# v9 v. ~
<statement sequence3>;6 Y, b, n) u. l
end;3 ~' d4 K% f8 T4 ~6 d
如果分支比较多，用：
7 x# ^+ S6 |" N, {5 S inspect <expression>6 l w: j* L1 K1 M) A' \3 Y" y
when <constant_list> then
: b; a- E8 @4 {" L7 j8 z! w9 F <statement sequence1>;
% k7 M/ {' j; o) C when <constant_list> then; ^7 S' q" |2 O: d: p
<statement sequence2>;
& w1 L2 u" [: [) T8 D ...
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<statement sequence3>;# k M+ F. D9 i2 C) o
end;/ A0 M( Y3 v! a3 S3 N
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2循环语句' |0 b3 C2 r7 W/ D
(1) from <statement sequence1>
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" \1 W' W1 \5 ` [& P <statement sequence2>;7 c8 K" {% r& m- c
end;
* ]/ y/ x3 s4 [6 j1 M3 p9 u& e (2) while <condition> loop6 ^/ b4 l1 U; i4 r' o8 P" w
<statement sequence1>;
4 E4 @5 w, p: r# ~# {2 q3 {; P# M end;
$ P$ M$ l/ e( j0 X# ` (3) repeat
7 N" w4 y& t) [$ ^ <statement sequence1>;
5 T6 O' s4 }& V- {- i. a until <condition>;% ?9 m4 a# B5 B- T q
(4) for <condition> to <condition> loop
) K- }% y0 t% s/ a <statement sequence1>;# u& `$ _! c9 u! |) x
next;
* Z7 ~; G; a8 f' c# K, w3中断语句
; s1 c3 x* w6 Y waituntil <condition> prio <integer expression>;. f# M* u& @9 q& g) \
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P } ]5 n7 F" k8 J; A: H9 i以上为常用的函数！
8 d4 _0 K4 |* h2 ~还有很多，如有需要我把资料发到你邮箱里 + y `$ w8 k2 O) r
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