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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
& @3 t7 y) n5 t& o. ~+ \" F if <condition> then
0 z0 t1 y( x; A+ N$ a# f4 L* n <statement sequence1>;
+ y: C/ K( {7 g3 a elseif <condition> then
# ?2 K, F' g3 j& i6 W& S3 C <statement sequence2>;( x% G% e+ h2 O" O8 s- N8 N$ @
else 0 u m7 S% ^0 B# E$ f( ]
<statement sequence3>;5 I% u! _4 W% @- c* y6 r* D* U
end;% i: Z/ Q+ o8 z5 m) m0 P7 Z% I
如果分支比较多,用:% N# i a" u6 `5 V; G o, |
inspect <expression>+ ^* A' j& F' R# z1 s' h
when <constant_list> then( A+ w/ [6 `, G4 _2 h
<statement sequence1>;5 T8 u e- M! n
when <constant_list> then* V3 a: l- t" P5 W z/ q- u
<statement sequence2>;
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else
! M" T4 L: C; V, M <statement sequence3>;
% D c4 _) ^- b4 i' ~. Tend;7 w8 `8 M# Y: ~& k
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2循环语句
& |% O# w4 g' u! H5 N7 |2 B (1) from <statement sequence1>
6 [9 z( a- e: c @, w9 q until <condition> loop" N' E9 O: g" s& T: `
<statement sequence2>;
6 p. M% m5 ~4 w& Q1 k J end;, V+ E. b! X% _. L5 H2 g
(2) while <condition> loop
T+ F9 ?6 R, V7 r9 r7 i <statement sequence1>;
' ` K( a7 x; q- y! H; @+ e5 m/ z9 x end;
( C# H8 C) m' b (3) repeat - m+ B7 b& E) o* I6 e
<statement sequence1>;0 ]9 e* C3 l* e! D( g/ H
until <condition>;
* y1 Y. S) K2 J0 h (4) for <condition> to <condition> loop, y6 C# k# n* ]7 I
<statement sequence1>;5 S9 q. @! z% m3 h. v
next;
! M+ K# I5 P: {7 _* X/ @& y" A3中断语句2 I4 L' x% _4 t0 s
waituntil <condition> prio <integer expression>;
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以上为常用的函数!' z3 J; [/ d8 J7 k1 J7 U, F" ]! ?6 ?
还有很多,如有需要我把资料发到你邮箱里 ) ~& w3 _7 j( u8 U5 M8 g5 R" j. @
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