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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
0 c4 N2 a6 _% q if <condition> then
. ~% n, s% g7 }( ~6 U( t! D4 k <statement sequence1>;+ [ \, w8 O+ E2 q% o
elseif <condition> then
( ~7 g; ^4 G' J3 n8 a2 c <statement sequence2>;
+ q3 [9 s( m# ^- X2 \8 N* e# u, r else
/ }* Q4 }- M1 Y3 S <statement sequence3>;6 Q, X5 }: x. }. X' l# ~
end;
# u j% l( a9 Y- n! ?4 n" p6 k如果分支比较多，用：
! v; k3 Z$ _% S* O# f; z inspect <expression>% ~! u2 D9 ], S. }1 _$ }9 i
when <constant_list> then
4 d: h/ x6 d# i& E <statement sequence1>;; z+ q) p0 Y6 ~
when <constant_list> then
$ o! V! H9 @; l( o/ u" U' ] <statement sequence2>;
+ N0 \. F& v! s& D ...
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<statement sequence3>;7 W# a0 D9 f% O. R6 a1 B" J
end;: t# b d/ \; V8 A' ?/ B
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2循环语句
/ S+ K5 G& ?! D/ Q4 N (1) from <statement sequence1>' t! `0 M9 ~8 S( ^
until <condition> loop
# e' w, ^ J- ~- T) G, M) F) z <statement sequence2>;6 ^! d9 F( e9 A+ F
end;" ?7 k# B# n, `1 w0 q
(2) while <condition> loop8 M+ r, k b$ g f
<statement sequence1>;$ s; c" E! r1 i, F+ q: g
end;
2 r$ X1 p7 |6 o5 ?& Z0 J" V6 L: w (3) repeat
|% c$ ^* g/ X$ J* l <statement sequence1>;, m3 F5 D: F3 j& X9 W; e3 z# G* q( @
until <condition>;
1 O: v2 @1 B R$ Q6 s9 X (4) for <condition> to <condition> loop
& r1 i* ]0 [3 F2 D( O <statement sequence1>;: b$ R. J5 [; l; V
next;3 l/ @4 V* E8 t' [& c! G- X' x7 X
3中断语句
. D2 I, P8 D% W9 Q waituntil <condition> prio <integer expression>;5 p* J' G ?$ a3 x( g P9 a
# m6 C! `9 X! G, a' ?
M6 _. f. n' p以上为常用的函数！* ?% z+ A0 [' K& X$ |7 j# i F* e
还有很多，如有需要我把资料发到你邮箱里 3 z& W& y# d0 `$ d. M1 b
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