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发表于 2012-11-13 08:48:12
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1判断语句8 \8 {5 z% Q6 {4 M
if <condition> then- Q0 E; M2 g! B8 Q( m& B4 \
<statement sequence1>;. I: L. B: Q/ z* S) P
elseif <condition> then) Q1 {( k; Q# ^. F b! n
<statement sequence2>;- N/ ~: n7 r1 I
else
9 w9 c, j9 w5 Y1 l <statement sequence3>;
: ]0 L7 e o2 Z* Z end;
7 t& f) `# T* a- j: q+ g( M8 d如果分支比较多,用:
$ w' h6 |- p3 F$ r- H+ _ _ inspect <expression>9 J6 a* Q' c9 s8 Z$ |( P
when <constant_list> then3 ?" n& X4 b- X, l
<statement sequence1>;
0 X. h) {2 D7 B when <constant_list> then
, j. h* o! H0 {* \1 n4 h <statement sequence2>;
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<statement sequence3>;6 ?$ n, [: k! \ v" t
end;
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: f; M! t! f" c: B2循环语句
, X6 ?: d" t; F3 `, U, ~* e0 V (1) from <statement sequence1>
' q: G9 ^. D" ~, b9 q8 Y until <condition> loop) k. p& s( f/ a- a
<statement sequence2>; k' c. p) }: A8 R1 j$ r" N7 i! K. m
end;
7 l% z: \6 j$ H( |9 a (2) while <condition> loop
: P: V( y' M: B. t <statement sequence1>;3 ~6 q7 [& B8 S( r/ q% a$ ~5 G
end;5 U' z1 |( l$ S8 h- K# N1 U- f
(3) repeat / @9 t3 O( E r- G8 p
<statement sequence1>;
5 `* U$ @' a1 ? \# N) n" k until <condition>;9 f6 J, c; }5 @: N% o7 H8 b. p) L
(4) for <condition> to <condition> loop' {! Q1 M( q( O* Q0 o
<statement sequence1>;1 {4 |+ h: L* m2 {5 K
next;/ F- d% b* A" E8 l: K
3中断语句3 m- y9 w% z7 q. }6 {7 b2 o
waituntil <condition> prio <integer expression>;
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以上为常用的函数!" N: v# U% G( s
还有很多,如有需要我把资料发到你邮箱里 ! w: o+ w: S6 l: v; ~
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