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发表于 2012-11-13 08:48:12
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1判断语句8 d2 ~! n+ K) f9 u* Y7 s
if <condition> then) o! M2 i. R% H' Q7 \7 @- P! \
<statement sequence1>;
$ C( W9 ? p: N5 f7 u( d elseif <condition> then
" c0 Z4 [$ ^; K* h% [" e" [& y <statement sequence2>;' z( j; V! c3 a, D9 \
else / O a2 B3 g0 _: O& }
<statement sequence3>;
3 Q. j4 |3 \& E% U0 Z D7 }8 ~ end;* K: f, R% O: p# A
如果分支比较多,用:- x" _# P: ?( z+ Q
inspect <expression>
$ ?5 q% Z" P- {1 H& Z4 f when <constant_list> then
0 k( V1 T. Y! L! m7 `' Q <statement sequence1>;
, A. Q1 Z( s6 N& A$ q when <constant_list> then
`2 E+ |( i( E2 z! t; U. R <statement sequence2>;
5 y- J: e* x1 e3 c) f; F8 ? ...
/ Z# p# u4 L0 i7 U& y5 C @+ G else
$ {! F* K6 d& P/ [7 `- o <statement sequence3>;$ i) d1 m5 o& g: n% ]
end;
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2循环语句! z1 a9 |6 y8 K6 y ]6 Q. k( {
(1) from <statement sequence1>! p6 }# a# b, v# i/ C
until <condition> loop& N$ J. u w1 A, [& s
<statement sequence2>;
; ]! @) r! ^! j) c end;
$ q& u" k8 O, p3 B$ ^ (2) while <condition> loop7 \5 V( \9 f9 f0 H C0 \" h
<statement sequence1>; o( ]0 R) e9 @; k7 e5 ^. ]
end;
i3 o3 M- I8 |+ u (3) repeat
L1 e1 |) C! m: B) @4 U <statement sequence1>;
7 L4 D9 [$ F/ r& W* \+ x/ [: U( y until <condition>;
& p) q* E3 e( m. @( v4 t- G (4) for <condition> to <condition> loop( g1 @+ u! S# Y
<statement sequence1>;& Y1 h( q" d8 U! V
next;1 e5 w( L# v8 H& X
3中断语句
* I! M9 ^) `; T& x1 A waituntil <condition> prio <integer expression>;, u. j/ e0 q( l/ D) O$ r* D
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7 ?. c; F( ]6 y" J以上为常用的函数!4 W: i1 T3 ^9 {8 ^* {
还有很多,如有需要我把资料发到你邮箱里 6 G$ ^0 A* A2 R3 z: v) H
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