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发表于 2012-11-13 08:48:12
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1判断语句
4 X8 g8 d$ g" _9 B7 C5 Z, u if <condition> then
# q* @- N; j" O6 ?" @" D8 x5 t <statement sequence1>;- q( B- Z* P, k
elseif <condition> then+ _& j0 ] H% r3 k
<statement sequence2>;& C: T6 C4 F5 Y: l* J
else
7 B9 S; ~, x$ n* ` <statement sequence3>;/ @7 A( P( E: v5 \4 k; i
end;: ~) [1 I! g% A
如果分支比较多,用:
6 ?/ X& }- Z) T4 P9 Y3 _- T3 k inspect <expression>
. Q8 F6 \" U5 R l$ p0 k0 N& J when <constant_list> then# x: u% ?# m7 q7 ^1 ^& T: I! T6 t8 _
<statement sequence1>;
: `* I9 m) t" T( [/ n C6 F when <constant_list> then
0 r, ?6 b+ S3 o; B5 k3 ^ <statement sequence2>;- i- a; |/ M2 J, T% J
.... j8 ~/ n. ?. ?& A! _, Z0 b
else( q* I# `, o, n7 ]1 n6 w
<statement sequence3>;
f! X. D$ `# Tend;
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" _: I- v$ a0 h2 \5 J2循环语句
: O2 y) r9 X' b/ ~* p+ j8 k (1) from <statement sequence1>9 q+ X8 T& d4 H1 t2 B& u: B( ]6 ~, n$ O
until <condition> loop/ Y2 g6 F, @: |. L0 ?% ?
<statement sequence2>;7 | ? W, W5 S' r- Z
end;7 D$ ]& R1 f4 G/ H. ?
(2) while <condition> loop1 U3 H- Z( J+ k0 o$ ~6 R
<statement sequence1>;
7 s, N9 R: F1 i end;
! h$ e4 R$ a# ]6 c/ p I# W (3) repeat
& V o7 Z$ r5 L3 q% z( W7 x ? <statement sequence1>;
! s1 K$ p p6 x8 T" a/ R0 k1 } until <condition>; M J! ?8 h1 l4 W1 _
(4) for <condition> to <condition> loop
, F a. o$ J/ ` <statement sequence1>;- x( z) x1 _' Y/ K% u: f
next;' c" C! L H( t* K. C% i
3中断语句
# k5 _" O( Z5 }: D6 u4 n' B7 G waituntil <condition> prio <integer expression>;' v, G0 x( w* {" |7 ~
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以上为常用的函数!
, E6 w, T1 q' B+ y* X还有很多,如有需要我把资料发到你邮箱里 $ C9 H7 n9 E7 E
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