25.类，对象，成员实例

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第一种写法：
#include <iostream>
using namespace std;
6 B2 u  y- l& O$ J7 ~4 i  S; H" Xclass Human
{
public:
void GetHeight(){cout<<Height;}
' L' X. d5 i( [% v void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
& @6 [9 O0 h: \! h+ C" n' y- Uprivate:
int Height;
9 ]/ [" N$ s/ J int Weight;
% a, z" J  w5 O# \" e2 t6 l, [};

void main(void)
- Z0 Y& v0 ?9 i  v) V  |{
   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
" r( }& o. Z7 x! ^" U   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
' [' ^( D5 M, x4 t! L   Lee.GetWeight();
) ^# \8 ~+ U" ~  a) X   cout<<endl;
$ B. G5 B, s, A# j9 ]}
第二种写法：
' a0 ^. S: [& P' s* Z#include <iostream>
% }' ^& Y) n* X4 Gusing namespace std;
, b' C1 {$ O7 k3 j& V( R" K* aclass Human
{
4 j) O6 I: E0 P# m! _: F2 epublic:
void GetHeight();
    void GetWeight();
4 l7 e. }3 N' T6 u void SetHeight(int x);
void SetWeight(int y);
! |3 k  W  f9 A' ]( K3 ^6 Yprivate:
int Height;
* t, k+ X$ j, D* y, j* W int Weight;
};
void Human::SetHeight(int x)
{
Height=x;
}
) J# @' ]3 N1 H6 _: t4 s' `void Human::GetHeight()
4 s# F7 V$ Y) A9 B2 y2 x& q8 H{
cout<<Height;
}
; }& n5 ~) E; [5 ovoid Human::SetWeight(int y)
( l: x. a( w0 Z& \9 }{
+ l" |* a; s$ d7 I' ^$ | Weight=y;
- V0 p, G6 u. G3 u- j$ Q}
void Human::GetWeight()
& ~3 l$ Z7 T  ~! _7 S{
cout<<Weight;
}
void main(void)
7 w5 ?$ |8 \4 a' N- T- h{
   Human Lee;
# w: m8 D7 y: s" V& T   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
" k, z- x9 N/ x   Lee.GetHeight();
   cout<<endl;
1 `* s* m' d9 w* V9 v: A  Y6 W   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
" W( W& p8 j# c5 X, x4 G   cout<<endl;
}
( e* E; H) ~5 m' r0 t" r1 J( n推荐第二种写法

2 p0 Z% N4 w& d* r+ p& y7 d$ n, I