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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* Y+ w9 v2 ~' u
if <condition> then& V" W/ R4 W' k. T0 o3 H3 }
<statement sequence1>;! {3 W% d1 t( F6 d
elseif <condition> then4 O5 T, P, i0 } E2 a
<statement sequence2>;2 |/ e( O: ~* P" q7 Y, ^
else 1 y t {: O' S5 ~( K
<statement sequence3>;: [$ w( K; ^4 Y. [7 V
end;
8 k! s( u; J. ^; E( r- H4 P- i: e如果分支比较多,用:5 O! y6 x1 V F" d$ V" S: g, I5 E2 t
inspect <expression>
) p$ F9 Q. E8 H$ k7 S/ i when <constant_list> then1 G4 N1 {; `4 b2 e- N, b
<statement sequence1>;
/ l) B1 n ]3 S; t when <constant_list> then# x5 S; M# a: P. p( o o6 O
<statement sequence2>;% T$ j$ T9 N) S9 t8 U) O
...
e5 @8 C s v v$ u. Y7 z else% c4 I0 D/ a- m$ t
<statement sequence3>;. a" T0 b0 Q' U! `/ Y6 p' L
end;9 D, C. K/ G8 F0 V) J/ Y9 U/ U
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2循环语句
6 Z; ^& u$ j0 Y0 n (1) from <statement sequence1>: q& o+ W8 n: D* u& z6 }/ e
until <condition> loop: p- _1 L/ p" r9 U" s Q! B
<statement sequence2>;
1 z; y4 F+ k- g1 u: `6 \+ E end;% r5 R5 W# B2 A6 Y( A5 N
(2) while <condition> loop; K: {$ B. a' p5 ^( y
<statement sequence1>;
9 Y1 f% P+ ?" o$ G* L end;6 R0 g; N, a4 J
(3) repeat
# E w& P' ^( e" H4 r <statement sequence1>;
* C8 h; k7 n! } y5 ^2 f5 y8 X9 ? until <condition>;4 G. {$ {# Q y b7 {
(4) for <condition> to <condition> loop# q2 i, C: y& {1 M1 V
<statement sequence1>;5 n7 j( n. v$ B8 B9 _
next;
7 ~7 y3 J' T8 ^% C( l- O$ `- Y3中断语句
4 x$ W( g; W1 D6 n2 Y) A! @- D waituntil <condition> prio <integer expression>;2 D3 H e+ ^. B# ?9 w
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以上为常用的函数! \1 e4 e& p: _3 k. |
还有很多,如有需要我把资料发到你邮箱里 . ?% Z" Q* i% n& N6 G% |& m
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