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发表于 2012-11-13 08:48:12
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1判断语句" Q% A4 Q) n8 ~9 U
if <condition> then! m- P5 X1 F/ s
<statement sequence1>;
) g i, Z P& x. m elseif <condition> then- b- x- ^9 ?2 ]1 D6 P- ]( y8 f
<statement sequence2>;
. X& h2 x% D# H" | else
4 {3 P v2 I4 }. ^5 x <statement sequence3>;7 `) w5 e/ i/ c3 a: G
end;/ A+ L3 n; o. Z; S7 W4 H
如果分支比较多，用：9 k1 l6 P, O' K1 M) J. {5 o" g
inspect <expression>
( P* Y1 C( c% F' |* y# W7 N when <constant_list> then% `$ Z" E& l7 ]; U0 m8 R& G
<statement sequence1>;7 D% J9 U- F% ^/ H0 Z" g+ y8 \
when <constant_list> then
$ H0 a0 ^. S" p% R1 w7 Q% U <statement sequence2>;
4 g4 j; }8 X$ W2 e ...
9 Z/ `( v S7 ]2 W' I else' \- p9 y3 g! B) {$ x! d# C
<statement sequence3>;
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2循环语句9 Q" C+ u6 m2 M! [9 ]6 Z
(1) from <statement sequence1>
- u, z j( i6 M9 z until <condition> loop
1 h$ B3 n O" v4 o+ K: ]. u' m) g <statement sequence2>;" b }2 \9 s1 {) Y$ L$ S4 B
end;
, T- o! g5 i: c7 w# Q (2) while <condition> loop
' I) c8 i K3 y <statement sequence1>;
6 W/ t# J$ e; N& P end;( U5 l0 _; l, }$ S$ l# }
(3) repeat 0 q R8 R1 o8 J" l4 ]
<statement sequence1>;
5 e9 o+ f8 i; v8 F; N( W" o1 p until <condition>;
9 v- l" _! @# F- M" v, s* w (4) for <condition> to <condition> loop, @! p* b; ?4 c2 U0 q
<statement sequence1>;! Q1 O: F8 C+ ~' j
next;; t H* D% G) H4 z% l( a
3中断语句
+ M7 m9 j; M4 Z( L8 u) n waituntil <condition> prio <integer expression>;' q, Q% g9 \7 C9 I
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6 n# ^5 S* |1 z' ]以上为常用的函数！
( @( l) i0 c, H9 H9 ^还有很多，如有需要我把资料发到你邮箱里 : b! `& N9 F3 f5 ~$ L3 U, n
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