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发表于 2012-11-13 08:48:12
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1判断语句+ {8 J' w8 k: W7 `
if <condition> then
/ v6 n4 K) T( {3 b7 V8 f9 v <statement sequence1>;0 @( y( v" b% _6 \! A
elseif <condition> then
3 e4 j7 A5 S3 E; M. { <statement sequence2>;" e2 e% z+ P6 D3 Z
else
4 d- y6 \5 l* q! | <statement sequence3>;; s! j& q1 r. }
end;
/ w0 _8 j) E3 p9 g; n如果分支比较多,用:* B' K! B# N n; Y
inspect <expression>
$ V" e% d; T+ w) W+ t5 a" C! `% @ when <constant_list> then: x8 f% A& }$ A5 t2 C
<statement sequence1>;6 s$ J2 D4 l; v2 b
when <constant_list> then
( ^* ^8 `. p8 i6 M% q. Y5 z8 | <statement sequence2>;
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else
3 s, `+ m" m. j; \' B0 ] <statement sequence3>;
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2循环语句
8 h. U/ w# X: z3 L% B. j7 Q (1) from <statement sequence1>
5 }" i& B7 ~$ Q) b$ h6 I until <condition> loop
0 ?0 n1 `9 I$ M# @5 { <statement sequence2>;
q" m5 ?0 q" V: l7 |6 X end;
3 z: S2 X4 w7 e+ r+ ~/ M! | (2) while <condition> loop
: A# Y: o, c* R3 g$ W/ c/ t! i <statement sequence1>;! U" [: P' O% z- d: R# w
end;0 T3 v7 ]: L& b0 s) \6 a
(3) repeat ) `' |3 c4 f3 @( `- g
<statement sequence1>;
9 p" Q7 G% ?3 H+ A( L until <condition>;
3 P5 m3 E4 Q2 m2 }: C (4) for <condition> to <condition> loop
# Y0 g2 o( ^0 C L4 m( _9 Z. g <statement sequence1>;) r$ [2 y9 B! v7 @1 ~
next;# G" ], J. I' ]/ i( o* o
3中断语句
+ c# @9 ^( ?! d waituntil <condition> prio <integer expression>;
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6 z' t" E3 g" y( z; H以上为常用的函数!5 Z" ^ Z" I" Q5 P7 i! i
还有很多,如有需要我把资料发到你邮箱里 # z9 K% h6 ], s5 x; ^" o7 r2 ^
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