25.类，对象，成员实例

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第一种写法：
' n8 Y$ Y' W7 T- v#include <iostream>
2 I; V' A  @( Q8 A* Ausing namespace std;
2 e7 l3 z0 \9 x, ~: Nclass Human
{
public:
void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
6 F* |* ^6 B, E5 l" ?  sprivate:
int Height;
int Weight;
, A4 a, w1 W  @( D$ U. Q5 e4 w};

* p* N0 H8 I& j7 k% Tvoid main(void)
{
( M2 X6 @* h; @  Y  |0 U' q   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
8 I" W7 e2 M. N9 N3 {; F6 @   Lee.GetHeight();
' e+ @$ _; J2 K% p   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
6 t/ d6 U; V9 v. k& Q, b* Q: _. d1 G- `   Lee.GetWeight();
" [+ m( ?9 ~5 g   cout<<endl;
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第二种写法：
2 j, y9 p- H! V4 P% F6 n#include <iostream>
( }5 @" K# v. e. Fusing namespace std;
; G9 `6 a* `1 X+ k) q2 `' dclass Human
2 S# e0 V7 p% Q$ L2 _0 l8 K9 J( o, O{
, G, o9 J2 t9 O: [& G# t  zpublic:
+ r; Q8 M, ?1 C$ W, f void GetHeight();
  u' b4 G4 x8 e    void GetWeight();
9 b" ^: `4 o: ]7 a void SetHeight(int x);
void SetWeight(int y);
private:
int Height;
8 }  i% T' d, t) C+ V int Weight;
6 D2 P# T% E( A, p( }& V- t; t};
void Human::SetHeight(int x)
% w' R% d1 Y& q1 L{
Height=x;
}
. H  {/ X4 @7 F- v+ o$ Cvoid Human::GetHeight()
{
cout<<Height;
}
void Human::SetWeight(int y)
{
Weight=y;
! I4 I* w. ~) Z' u0 [+ \. S4 q}
void Human::GetWeight()
{
$ l5 r6 `! v, M! I4 K cout<<Weight;
}
void main(void)
{
" H. I# Z0 g5 E+ j% }$ g   Human Lee;
0 [& ^" O2 P# s  p   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
4 D4 @% a. A; V& u" b/ k   cout<<endl;
   Lee.SetWeight(120);
4 u! G: _' h$ C/ L( Z+ S/ ]6 s0 N) n   cout<<"Lee的体重是：";
9 @) B% W7 _% C& P   Lee.GetWeight();
   cout<<endl;
}
. i  Y6 J' E( k$ ~8 `* j0 s推荐第二种写法
( q9 k/ ]' q4 l0 f' }2 m) T3 Z" E
+ ?' J: \3 K& I' N
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