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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
4 F4 Y" [/ \9 j# X' E if <condition> then
! }$ `2 |' h% }( Q1 T/ S <statement sequence1>;
' v ?7 }0 ?: S- d2 l ^ elseif <condition> then
$ U6 B ~1 `( o; ~ <statement sequence2>;
8 P$ }9 b: B0 T% H2 I else 4 z5 R: t$ c5 e
<statement sequence3>;
1 C4 d1 t6 J: u4 q' ^! F' W end;. [! _0 f5 @ [9 t4 j
如果分支比较多，用：
/ t7 \* P+ s @' H9 [: i k& z inspect <expression>) i x. B- j% J2 E, R( m
when <constant_list> then
- F, v, @, P7 m" ~ F <statement sequence1>;
% g- R# F/ ^; F3 N( G% x9 b0 a when <constant_list> then
7 X% M! K+ v6 M0 H- ^ <statement sequence2>;) M3 s6 Y/ x8 a9 F
...- U& G& {- {! b3 a3 i
else
+ @. i- T* a9 p* \' U$ O+ j/ E9 J <statement sequence3>;
2 f9 B! j; a& y9 J! O3 Iend;
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2循环语句6 R) P, \7 W8 G" M
(1) from <statement sequence1>5 t2 R+ ^' H) o1 G, E# r
until <condition> loop: \$ Q, O0 j# V5 t# h/ L
<statement sequence2>;
+ @ G. f& f7 K; D" }2 ?# \ end;# O' f; V: @- q3 \5 ~- ]$ @0 ]
(2) while <condition> loop
- t, v8 v1 k) ~& J% X0 X7 U <statement sequence1>;
; I. ^; G: I9 a) q, k end;
$ _ d0 s1 x8 `$ T& Z' n) _& Q9 r (3) repeat 3 g$ e+ m+ x2 S$ t2 W+ D! d$ [) ~
<statement sequence1>;
% y' z& U* S: T! q/ G until <condition>;
) o. A- I) l9 |2 e7 I+ W& Y (4) for <condition> to <condition> loop
4 B/ r, e7 p6 I8 k <statement sequence1>;: ?# R% [5 |, ~: V' f
next;0 Z/ ]9 G, N" e. a
3中断语句
7 m, \/ l: d a; q9 Y waituntil <condition> prio <integer expression>;
8 \: {* [1 v4 H8 C! I) t: L) V% d5 G' J8 F3 I& q& k
1 |1 n5 ]' V+ L7 N. T以上为常用的函数！+ o. O# t7 x8 @' ~% H
还有很多，如有需要我把资料发到你邮箱里 ) m; J% l, S' D; S/ ^( y
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