25.类，对象，成员实例

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第一种写法：
2 ^" P( z3 v2 a* V' W( u#include <iostream>
  m4 y( a6 V0 j/ {) X/ Jusing namespace std;
class Human
{
public:
. A- z; |5 ^2 m; ~( @4 O void GetHeight(){cout<<Height;}
( I5 S+ P$ d8 x3 p% ^* J: B void GetWeight(){cout<<Weight;}
. K4 V6 E5 k0 K$ w void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
private:
int Height;
1 v  C# d! {, _  \, ?4 _# z4 z6 {# i int Weight;
4 A7 k' m  a+ D" A6 k: ^};
8 |3 b+ b* [5 L" X. P  o
: D7 C4 T6 w6 K  m5 }void main(void)
{
   Human Lee;
   Lee.SetHeight(172);
: V) S! L& Q  K4 @. a6 m, F   cout<<"Lee的身高是：";
   Lee.GetHeight();
; K) S' {  I: K   cout<<endl;
   Lee.SetWeight(120);
' y+ o, O+ w$ S! X   cout<<"Lee的体重是：";
   Lee.GetWeight();
! l+ Y' ]; F4 Z% N. C   cout<<endl;
}
第二种写法：
/ `- Z' b7 @5 B4 L' G! Y3 N) S#include <iostream>
1 N3 @' o7 _# v' H2 U0 Busing namespace std;
class Human
8 E- V! @! F+ S{
- S' F! M; F( A2 npublic:
7 W  H" r% P1 k. s- O+ ?0 E  A void GetHeight();
/ Y4 Y) R% d7 T    void GetWeight();
void SetHeight(int x);
3 r* D' S; \6 k4 \  S- V void SetWeight(int y);
private:
int Height;
. |* }& p; ?; S9 g& j int Weight;
};
; l5 j; m/ ]+ M/ D& l# ]void Human::SetHeight(int x)
. A6 ^! k3 }) ^0 |$ u{
% G6 ^0 [4 F8 X5 u% T' Q+ W Height=x;
. J- i+ n5 n. ?# I6 l0 I5 S7 p8 ~}
void Human::GetHeight()
. I  K; L/ F' i{
0 v0 @9 m% e/ f: M& V, r% L$ N cout<<Height;
: F$ q( R1 U, u1 F; k( x, K* i" a. p}
2 N3 l/ i( |1 Q; P0 r- @void Human::SetWeight(int y)
5 `' U$ H& Y8 j* Z  {3 }# Z{
Weight=y;
}
( }5 e+ h  L! Z3 B4 N% J) Xvoid Human::GetWeight()
{
cout<<Weight;
}
void main(void)
{
   Human Lee;
   Lee.SetHeight(172);
4 v5 _$ B" ]. N1 t& L0 k6 z! f; M- {( l   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
}
推荐第二种写法

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