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发表于 2012-11-13 08:48:12
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1判断语句+ H, I+ Q3 w8 y' p: W
if <condition> then# N; o: D9 A |
<statement sequence1>;
1 ~$ C7 V1 w5 |$ ~* `& j8 H elseif <condition> then, n+ ~; v# o* y
<statement sequence2>;
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<statement sequence3>;
" D+ B9 C, i9 E! }; U. M+ w end;
6 ]: c. k5 a. _8 U! F& h如果分支比较多，用：
7 z" m* s3 c% t& n7 f inspect <expression>2 ?- @, w, Z' j
when <constant_list> then
7 q; L$ o* Q; F E! F <statement sequence1>;
$ d) H; Z2 `2 |' M when <constant_list> then
+ |# L6 ^% F. p5 ]' l <statement sequence2>;
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else- Z* p' Y0 u" V3 Y. q2 h
<statement sequence3>;
( F9 \3 \! N" @5 a! Lend;8 i! L# W8 `$ `, ?1 M
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2循环语句- ~) [5 ?8 c7 ]( @- S1 e
(1) from <statement sequence1>2 G' {* Y) g* j+ y. ^0 w# O$ ^
until <condition> loop# H; V* z3 V0 O7 o' l
<statement sequence2>;6 ~6 }$ ]0 f* p% E
end;0 L( z$ o, ^) I
(2) while <condition> loop% x: j5 ?" L! B- n( z2 n# E
<statement sequence1>;
, A; ]" ?* s$ k/ l7 f end;
# B) p0 a: Z4 f1 D1 k8 W0 X (3) repeat
% D5 ]' @6 P4 b4 E <statement sequence1>;
& }0 Y5 p, @ C$ n/ ?; k& V; t until <condition>;
2 n% |7 r( I) v, D (4) for <condition> to <condition> loop& d6 C8 F8 u" i4 i
<statement sequence1>;4 C- w1 s/ f* a) r8 |
next;' e0 @1 y7 E5 L/ k6 Q! u; z" R
3中断语句" i0 q1 F; Y0 _! r- v4 i4 K# I' S$ Y
waituntil <condition> prio <integer expression>;! h# k% X! F/ j$ c7 E4 l0 C' b
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8 {4 y8 f. O, H- a- o3 m以上为常用的函数！
* K: H$ p4 d: \9 ^% F. \5 t还有很多，如有需要我把资料发到你邮箱里 & ?- z) y* L: F+ C
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