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发表于 2012-11-13 08:48:12
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1判断语句3 v$ B8 N7 w8 D; f L- W
if <condition> then
2 [; e) c7 p+ H& R+ z <statement sequence1>;
4 J5 ]( F: n% v" Z0 c% c/ {" N. a elseif <condition> then6 z1 s# z/ S' p4 p* Y
<statement sequence2>;
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<statement sequence3>;# Y2 _7 t' o2 f \9 u5 w2 R- a
end;
/ b6 T8 F8 M. l9 a8 Y3 j如果分支比较多,用:
, N( k4 k2 m( q+ d inspect <expression>: C# e- ^6 n# z- Y& ]- A: m9 g
when <constant_list> then
. i1 `2 t2 [# f C& N <statement sequence1>;" x, e6 I* t( L% Q/ B" u& l
when <constant_list> then
2 z1 d: E, _* c D6 g2 |7 e <statement sequence2>;
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else/ v; }! l6 e8 ? E/ A! S( O& ?
<statement sequence3>;
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2循环语句; ^# c9 g8 G; F
(1) from <statement sequence1>
7 d& B8 n! K7 ]( K' V; W# P$ c until <condition> loop+ r( j( Y/ l) w( n5 ]
<statement sequence2>;
8 h u) `/ L2 }2 d7 a end;
: F9 h/ }+ r9 L (2) while <condition> loop
9 X' G- F8 D7 a+ H& T" X; Q0 I* } <statement sequence1>;
. u4 H5 c/ f) m end;
! d. X/ P. @2 E' i5 I7 \& o( N) b3 c (3) repeat
8 J0 C, c& Z% @/ w+ G1 o <statement sequence1>;8 O, l' G; r5 }. P
until <condition>;
. Q' D# |+ x& S3 I! u/ J (4) for <condition> to <condition> loop
1 m9 z* E0 E3 q/ G0 [ <statement sequence1>;5 j; u: g; F. y) o( ?& q
next;9 G) i: R4 g% R! {/ ?9 q6 B
3中断语句) m1 f$ h7 \8 u
waituntil <condition> prio <integer expression>;& t; d, e4 p4 X2 V- a8 j; d
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以上为常用的函数!- U' d. T* ]6 Y) |4 P& R' l! P
还有很多,如有需要我把资料发到你邮箱里 s! L3 G S! }
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