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发表于 2012-11-13 08:48:12
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1判断语句& z2 G/ }3 v( b I p; K
if <condition> then2 {3 F( W& ^1 L- s" R( J3 D: K- p7 ]
<statement sequence1>;
0 S; [$ R& L {. I$ B elseif <condition> then
5 w( ^: }4 L9 B <statement sequence2>;
( x* F/ U# w! P* X3 J+ R else
; F& f4 L# e, u0 d5 q <statement sequence3>;( m# e* w& Q% [1 j
end;
) f4 M2 g; \- m* g1 u" [/ _9 n如果分支比较多，用：
8 J9 }/ z0 J$ G) }( u. A( |, G inspect <expression>
6 X. _2 M9 N& r; F: ~0 U0 F when <constant_list> then3 T& P1 N! e4 T8 `/ Z
<statement sequence1>;: f8 N3 W0 Y: [( T" v& V/ l) g
when <constant_list> then; _6 r. z" x4 P! [1 C$ Y1 y
<statement sequence2>;
6 I5 b- O& w% h ...
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<statement sequence3>;( C! j! }/ t! O$ K
end;
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- m3 `: B d$ z& ?3 U: ?7 A) b2循环语句
! L5 ~% f% Z: q7 w (1) from <statement sequence1>- Z+ X! |7 g P5 _# }8 H. b
until <condition> loop& _% P4 K3 ~" V2 r
<statement sequence2>;
. P3 V o, X/ O, o& W end;4 ]8 P$ q+ T2 I, t( {7 Y) K' u
(2) while <condition> loop7 S& M, u ^) ]1 ~
<statement sequence1>;
- N5 E r# q6 V; C. x2 i& O/ f end;/ P* I& Z! ?! r. B7 ^8 _) F( @. Z" x
(3) repeat
) @( t9 {5 k, m" O <statement sequence1>;
5 N+ B( q$ Z: @ until <condition>;
! b5 I9 b. _7 X/ m/ d# _9 f6 Z (4) for <condition> to <condition> loop
5 Y, z% K( j* q) Z8 p' _ <statement sequence1>;
/ Y9 ~/ b, |9 D( v$ d, B' w next;* v! {8 C. ?" r
3中断语句
" X1 M; p% o' R6 v4 m& i waituntil <condition> prio <integer expression>;+ O* `1 D$ {5 w7 {
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以上为常用的函数！0 o! k2 I, A5 }2 o
还有很多，如有需要我把资料发到你邮箱里 % w5 C0 e3 p; C0 [/ o8 g
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