25.类，对象，成员实例

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第一种写法：
#include <iostream>
using namespace std;
class Human
% e- H. X# R) j* L- M{
1 i) a# O% [6 A. J9 j8 mpublic:
. r( s! {3 N6 J$ Y void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
0 ]  R, E+ H/ K3 z7 h" w4 C2 D$ ]* Y void SetWeight(int y){Weight=y;}
7 b/ t9 d$ t0 {1 \private:
int Height;
int Weight;
7 W. z% ~& r- Q" ~};

) }9 x( _6 A: v: a9 P+ V) x9 Avoid main(void)
{
   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
0 V( d& C1 u. \   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
1 A3 x- P8 ?2 j2 W/ ^   Lee.GetWeight();
   cout<<endl;
8 c* z3 H- k5 {9 L: h}
第二种写法：
#include <iostream>
+ h2 m, Q4 e3 h2 w) M5 }. @using namespace std;
class Human
{
public:
# D1 @  j* Y( s" P. n2 l6 M2 `/ t  ` void GetHeight();
    void GetWeight();
0 |8 _' z6 K/ e3 y void SetHeight(int x);
void SetWeight(int y);
! q# y" U- w6 D, |" s0 x7 ]5 |- zprivate:
int Height;
int Weight;
4 l1 B( s# N  f, Q};
, X$ J! k4 k/ B% Tvoid Human::SetHeight(int x)
{
Height=x;
}
' O' u! _# X4 l0 l* V5 i: Tvoid Human::GetHeight()
{
! \$ X7 c  Y5 z cout<<Height;
}
3 L3 d+ d! o# y. [5 e% W+ Hvoid Human::SetWeight(int y)
{
Weight=y;
}
void Human::GetWeight()
1 i/ s9 J3 l4 S* i. ~& E{
cout<<Weight;
}
void main(void)
& Y  @0 u) A# G) y+ _% y# L7 c$ H{
   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
) X+ Z' O: l# Q4 e   Lee.GetHeight();
: {6 ~  P/ g5 [% x; x% `0 L   cout<<endl;
   Lee.SetWeight(120);
4 q& `: n1 P2 R1 N9 X( @1 K5 J   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
2 C. o6 ^, c8 z+ o# b}
+ X& d5 t' j4 y* ~7 J推荐第二种写法


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