25.类，对象，成员实例

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第一种写法：
#include <iostream>
using namespace std;
class Human
9 G. M& _' n& O{
public:
! [3 S4 j9 J7 e2 R3 E void GetHeight(){cout<<Height;}
  o2 }" x& X& j) u3 d1 M% v void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
private:
- x5 D6 h. ~; K int Height;
3 e5 ^2 }( ~8 H' x* ~5 G8 s3 h; b int Weight;
6 I" F6 n) s4 v/ `};
, p5 }/ W$ H3 o! P. N
void main(void)
{
8 m" H1 d2 a5 P- n+ ^   Human Lee;
   Lee.SetHeight(172);
% Z4 h9 b; j! a7 f- I8 j   cout<<"Lee的身高是：";
6 F; O' x4 M& \9 Y$ p2 K) X2 D   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
; _" e$ N# u! V$ m9 g% p}
  w( R& i" ~# N% V, ~/ U3 O第二种写法：
#include <iostream>
using namespace std;
class Human
* K9 I/ E: t$ [' q8 m& i{
9 V7 I) @  S! @  k( ]$ N9 {public:
void GetHeight();
  B3 p8 J& y# q! U6 Y# q" _# |    void GetWeight();
void SetHeight(int x);
4 ]1 K) I, k% n& z  z void SetWeight(int y);
private:
$ A0 E4 e" b! w. J int Height;
int Weight;
) [8 y- A, X: r. ?6 l& E/ F* d/ w* ], ^};
& T7 ?0 m' \0 b0 U+ ~void Human::SetHeight(int x)
{
Height=x;
4 I1 W7 K1 x; A  G- P}
- O+ `, `: d4 A. ^  o! s' n9 Mvoid Human::GetHeight()
0 \7 J; {. @# @- {8 x{
cout<<Height;
}
3 \2 ^4 ?! t1 Z4 P0 ]  Svoid Human::SetWeight(int y)
{
1 _/ m9 P3 g5 L- b0 z0 p Weight=y;
* _  W) u% f  v$ N- X% x! T}
void Human::GetWeight()
* g* w4 a: B# G  H{
cout<<Weight;
" j9 V! O: R- ]}
void main(void)
{
& b2 J4 W& F! ]! `) y6 N$ p  J   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
$ H. ^6 q7 Z6 j. }& ~( ?, p. i   Lee.GetHeight();
0 B) x: I! C0 ]+ N) e: E   cout<<endl;
   Lee.SetWeight(120);
- t# M; `) i3 Z) t, h" X   cout<<"Lee的体重是：";
6 |5 a0 @1 ?* n7 z1 q   Lee.GetWeight();
   cout<<endl;
}
/ O$ S$ o7 ~0 U' @; s推荐第二种写法


! i6 a4 J- J8 p+ t" _9 }