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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 t3 q% J) a. p# `% c- `7 e& e
if <condition> then
7 F9 I! {. b& `3 u <statement sequence1>;6 I0 @" ^9 Y. p' q) E
elseif <condition> then
4 N- l* V' A/ ~ <statement sequence2>;
/ ^( S' K% x; K6 y else $ x& O' W. K1 Q
<statement sequence3>;
" m+ ^+ b, a: J k0 r) m% E end;
& b$ {- b, L0 v( m; ~4 D% N如果分支比较多,用:7 v" c1 G* {* t7 a; ]7 H
inspect <expression> [. e8 {& P& w. i, b
when <constant_list> then }6 e& m; b. f- b7 B5 ]* |) S
<statement sequence1>;& c! ?) ]2 v U+ G( b. v% _8 ]
when <constant_list> then
7 D6 S0 R/ d* d4 K& y <statement sequence2>;+ C7 e; }* q# }( B# _% D
...7 u% O" f% t( F! }
else
0 k& _& a, Q( @/ M# ^ <statement sequence3>;
7 w' W2 _. V& Z3 [end;
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! N* K0 i& a( y/ P. O A8 B2循环语句
* @5 a+ G7 f Y i (1) from <statement sequence1>
. K* y- q) \( }; i until <condition> loop
3 h; u0 Q/ E1 W <statement sequence2>;
" A, d+ A! c& ^+ b* M end;
) I4 r6 a: E n1 `1 u5 K/ t (2) while <condition> loop
4 j! t* d6 C4 T/ T4 z. V1 } <statement sequence1>;- O" g+ S g3 { X- |
end;
4 n. w4 J7 M2 x) f; o (3) repeat # N- q* i( i; ^% n [5 Y
<statement sequence1>;3 c+ [6 ?# [6 ^+ Z
until <condition>;
5 B ^2 o; D( A6 c( v- { (4) for <condition> to <condition> loop, t; j, n$ i4 `4 U+ ]" K
<statement sequence1>;/ C7 r' @, x7 ^: i& K
next;
! D `. F+ G! @: G+ ^) ^% {3中断语句* @, p. W+ L' M, ^ q6 ^/ m
waituntil <condition> prio <integer expression>;
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$ H! ^: Z [9 y) I! {以上为常用的函数!
( t' j8 p0 r& T. s/ A$ `还有很多,如有需要我把资料发到你邮箱里 ! _2 A; n+ N& W! W- O( P, ?6 l
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w. O. k2 r+ p/ O- }
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