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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
1 Q% v' M7 C4 t. k$ t if <condition> then
) l0 i( |0 c* \ j <statement sequence1>;, @ n2 B5 Q, \" K; W3 U4 |
elseif <condition> then
( R. Z5 T/ s, k3 J0 M+ i0 t <statement sequence2>;7 k& S: ]( w/ M" ~! X+ Y- P3 e
else
6 ~3 Z$ ]+ f( I$ X3 O, J <statement sequence3>;, ~, e: O. \ ?
end;) T: j; E9 a0 {4 u% G9 |+ v4 c
如果分支比较多,用:
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when <constant_list> then% n: J% W0 p" `- m3 W
<statement sequence1>;
# e* j7 j/ b, t$ Y$ A when <constant_list> then
% e" h& i4 o/ ~ <statement sequence2>;
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else' M' z2 c# z" L) w
<statement sequence3>;
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2循环语句
( \; ^) s3 Z, a7 g (1) from <statement sequence1>0 E1 H7 {! p" T& z
until <condition> loop1 ^% o3 ~1 v) n
<statement sequence2>;9 O& |) g8 m2 i& [( {+ D# K
end;' B0 m( q& g8 d. k
(2) while <condition> loop9 A2 R( S4 q$ l+ K" m' Z7 F# |
<statement sequence1>;
3 J/ x( W5 E! J, ] end;
3 X' H( N& Z% r: P2 x (3) repeat
4 T+ [$ n/ U$ m! R) M <statement sequence1>;4 C1 G" t9 T3 ]) \3 N
until <condition>;% ~) L! B+ ]' y# l2 |5 |
(4) for <condition> to <condition> loop9 G5 U g, Y0 n% ]
<statement sequence1>;3 x8 g: d/ n1 F9 m3 x& ?" N5 i5 L+ `
next;
# p& L; r7 L. o* Z! m* e3中断语句
: T; k, n2 H7 U# C$ X waituntil <condition> prio <integer expression>;
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以上为常用的函数!" I/ l4 b2 ] [! V
还有很多,如有需要我把资料发到你邮箱里
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