25.类，对象，成员实例

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第一种写法：
2 q1 H! f7 _  \6 _#include <iostream>
' t8 k; {/ N# u8 lusing namespace std;
' J2 z  b" }; i" `. ~3 Dclass Human
{
public:
void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
( e, k% O6 x  ~, [& Y6 Zprivate:
int Height;
int Weight;
};

void main(void)
{
   Human Lee;
" X9 r$ c3 [4 o+ y  M# m   Lee.SetHeight(172);
: ^3 n0 V* P9 P   cout<<"Lee的身高是：";
   Lee.GetHeight();
+ X+ p% R2 s( i  V  A; G   cout<<endl;
' o  }9 }' S1 q7 f' F   Lee.SetWeight(120);
  ^5 f2 H: H  u. r5 a. Y% F; }   cout<<"Lee的体重是：";
/ o+ t8 Y+ I, X* {" ~# v+ N   Lee.GetWeight();
   cout<<endl;
% R! L- G& f: Y( P}
+ e4 ~4 ]) T# L# y, U第二种写法：
#include <iostream>
using namespace std;
class Human
{
% x) K3 n  s& k- Lpublic:
. L# m$ y& i! l! h void GetHeight();
- q; @% k+ ^2 P% g/ x/ ]    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
private:
2 V8 _# L( |4 P) u) k' Y int Height;
' V# t* i. s7 k+ B- `) p int Weight;
};
void Human::SetHeight(int x)
% D* [5 O* u$ c5 F% l) E/ j{
1 J! }& E/ ], F5 G. L) M. S Height=x;
}
void Human::GetHeight()
{
  \- L2 z8 s0 } cout<<Height;
}
void Human::SetWeight(int y)
1 r7 n8 W4 d& L( \{
8 v8 T0 c% H- X* i3 T Weight=y;
9 E: V% t0 {7 P* h}
void Human::GetWeight()
{
cout<<Weight;
}
: k8 \* H# J8 i' d/ m) Jvoid main(void)
3 g& E6 R& L1 P# @2 s' Z" Y/ ?2 R; T{
% p4 r/ ?3 v8 ]   Human Lee;
   Lee.SetHeight(172);
7 j( d' {, @& S0 j5 k0 }   cout<<"Lee的身高是：";
6 A+ J1 \' N5 |$ o5 L4 K   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
& G9 \- }% U4 v) W* |' ^9 A   cout<<"Lee的体重是：";
3 L' A! J, a- @   Lee.GetWeight();
/ B, @) |; c4 C8 Q& f8 E0 J   cout<<endl;
}
1 W; h5 T; B) E  [/ V; q1 Q推荐第二种写法
8 S- C9 Q2 e# e+ J( Z
3 I$ {& m8 n' h2 B
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