25.类，对象，成员实例

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第一种写法：
#include <iostream>
using namespace std;
4 S4 j4 ]$ l) i4 o+ F9 ?# M3 k$ yclass Human
{
6 M& o9 a5 f- h9 h6 v) ?; zpublic:
6 N8 O: L0 m: b2 v, \0 S) q void GetHeight(){cout<<Height;}
: d2 ~$ r2 G* X void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
. q& \. ~8 W5 C6 k" d! C* l, ` void SetWeight(int y){Weight=y;}
private:
" E3 p% Q  c5 _3 ^: D int Height;
int Weight;
};

' Y6 t  J% J8 _$ f" _4 a9 [void main(void)
{
4 R. M8 h/ s  c1 V& O- z   Human Lee;
& m, N  D. R4 G& c6 ~$ p   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
0 e9 e; Z3 Y1 c5 J   cout<<endl;
$ k5 y6 O8 u1 P0 C   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
2 \  Z4 f2 V  Z  f+ `! g}
第二种写法：
#include <iostream>
using namespace std;
class Human
{
5 d" d$ M" p( Ipublic:
* m  }+ s' E( A/ f void GetHeight();
    void GetWeight();
1 _  ]9 D( c4 j9 V; p- y/ m void SetHeight(int x);
void SetWeight(int y);
8 l: I% P; q( G$ m7 T, }- M) @9 s7 Dprivate:
int Height;
int Weight;
6 V+ t( @3 Z, j) W3 \% v};
void Human::SetHeight(int x)
{
Height=x;
# |+ d0 u7 X' {$ n# u! h9 x}
void Human::GetHeight()
{
cout<<Height;
}
void Human::SetWeight(int y)
{
Weight=y;
}
" ~& M7 J2 d6 s8 Hvoid Human::GetWeight()
{
cout<<Weight;
}
void main(void)
{
   Human Lee;
   Lee.SetHeight(172);
0 n& O, Q3 O, S, E* P5 D3 `   cout<<"Lee的身高是：";
, v: {& a$ ]  E( p& u   Lee.GetHeight();
( T* l1 v% x' a# W5 T9 _- m   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
. [4 u% U! c) N   Lee.GetWeight();
; L. _7 K1 l) x" ^% K) q; R: O   cout<<endl;
}
+ H: L) s3 Q5 h; q推荐第二种写法