25.类，对象，成员实例

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第一种写法：
#include <iostream>
using namespace std;
class Human
{
7 p: {8 p3 E* d# A2 r. kpublic:
* g5 R% ^6 f, K void GetHeight(){cout<<Height;}
. M% ^* X% T4 r' b8 M void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
* F4 j0 C+ P) r* }  H void SetWeight(int y){Weight=y;}
private:
int Height;
! E2 U) P* U! L int Weight;
0 k/ a" H( q) A/ T* y: v};

void main(void)
{
   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
2 u1 p$ x) y' i& e3 c! G7 {   Lee.GetHeight();
   cout<<endl;
- R" A" A, v) R0 K8 A) z' u   Lee.SetWeight(120);
' D/ l" K  @" H   cout<<"Lee的体重是：";
   Lee.GetWeight();
1 A$ `8 x. q* M   cout<<endl;
7 O; Z) q! q! W' L+ q}
6 K& z/ H2 B+ m/ X第二种写法：
#include <iostream>
  D" {. z9 N% R6 m. k, h  [using namespace std;
class Human
{
public:
) S- h- @$ j8 o1 _  f* i8 j void GetHeight();
* v  _* `8 X1 _* v9 e/ |    void GetWeight();
void SetHeight(int x);
- ?% {$ @8 `# Y2 C void SetWeight(int y);
private:
: Q: J7 V" Q* J  `# I2 A( a int Height;
int Weight;
};
void Human::SetHeight(int x)
. ]' i! P% A. T( ]{
Height=x;
7 f  c% U1 e( f) ?4 x9 t7 F. ]}
7 f$ Y* [5 {. S0 r% G0 wvoid Human::GetHeight()
{
cout<<Height;
" V/ u+ J/ x& V5 ~+ Q}
: N6 B: d( e% m# Q& vvoid Human::SetWeight(int y)
{
Weight=y;
}
" C) P% e! d2 J# Svoid Human::GetWeight()
{
cout<<Weight;
}
void main(void)
{
6 Z( D$ V0 e9 h2 m   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
3 N. [9 J/ M# V   Lee.GetHeight();
% y- S8 o6 c3 v5 G0 `7 C  z   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
* @& M# o$ H$ N- l' z   Lee.GetWeight();
   cout<<endl;
}
推荐第二种写法
% b& L6 O5 r* v4 k2 r1 j