25.类，对象，成员实例

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第一种写法：
#include <iostream>
0 A$ |% X9 z0 o/ Z8 y9 }) m' T4 Nusing namespace std;
5 J$ n+ N- S* E$ r) T  kclass Human
{
' L* }1 G: e/ I  ]& I9 o3 xpublic:
8 [1 G" f4 U7 O7 w6 y) h void GetHeight(){cout<<Height;}
4 ~3 S( W% G9 S% c4 \/ } void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
  D- |: |* D9 @0 Q void SetWeight(int y){Weight=y;}
2 L! p2 ?, x% p2 C2 R" v5 q" iprivate:
$ c5 c- C4 A0 t int Height;
  v( m- ]9 [& Q8 Y int Weight;
};

void main(void)
{
+ J+ s3 C  [/ m* q7 R  R   Human Lee;
6 h2 k* L$ f0 c; {7 |+ x   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
6 J- F- M" y* l* A2 C6 ?   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
/ F7 o0 T! K( i- ]/ y" M. W& Z   Lee.GetWeight();
   cout<<endl;
: c: H9 d9 I) G( _+ T' \' K( l}
/ i9 n6 M2 t6 f9 L3 C) L第二种写法：
#include <iostream>
using namespace std;
class Human
{
public:
void GetHeight();
    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
; m% U) o) P* k& m4 e7 e6 Xprivate:
0 ^  V" R3 j" V int Height;
$ r1 o% }- C1 B( M/ M int Weight;
) j& C: R, v4 @# L};
) R/ e1 f. P2 ivoid Human::SetHeight(int x)
{
! ^& q# [+ ^1 B, |* N Height=x;
}
6 y& k0 y5 b% s/ z7 ~void Human::GetHeight()
: K6 [) ~; h' g: O* s& g{
1 r7 d# x+ D6 D! D" S cout<<Height;
}
void Human::SetWeight(int y)
) L3 V  x8 y7 X{
Weight=y;
}
5 ~/ b9 [- Q3 x# ?! Tvoid Human::GetWeight()
; G- w2 f+ M' H, d, _6 _  F/ X7 k{
cout<<Weight;
}
  A. [: I8 m/ C& Tvoid main(void)
1 @1 x. w2 U, R$ I  }{
( [* N% s0 F6 {# P" M! b   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
  s& V/ ]* f' `8 N5 W5 f& N) l6 O( p$ j   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
}
推荐第二种写法
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