25.类，对象，成员实例

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第一种写法：
#include <iostream>
using namespace std;
+ c7 O& l) U: F- E4 r1 E( |' ]class Human
{
public:
void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
: B% O/ Z5 `2 { void SetWeight(int y){Weight=y;}
private:
( h8 O2 z# ]$ |% _2 `" l int Height;
6 M& ?5 M8 l. d' w int Weight;
};

void main(void)
: i( ^  S! g" Y{
   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
) t- K2 o/ m4 Y2 Y+ M$ T   cout<<endl;
}
! h+ C2 q( I1 g6 H第二种写法：
% n8 Q, m: G( I) J" `& j#include <iostream>
using namespace std;
% v3 T! N+ e8 o5 r% G; M8 w  cclass Human
, d: m" v2 R7 g{
public:
void GetHeight();
    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
private:
3 Z3 m( a6 C0 e! j; n6 h3 C int Height;
int Weight;
* E" N/ B1 P- F6 z% j) |$ L* I+ @};
% N! C) }$ `( K1 ]7 @7 e9 Fvoid Human::SetHeight(int x)
{
Height=x;
5 D1 T- l7 H1 Y+ F}
void Human::GetHeight()
{
9 E: w8 {1 B$ l/ t8 G+ }. X( d cout<<Height;
$ k, m, x* Z7 Q  Y# i/ c}
void Human::SetWeight(int y)
{
/ s2 C. J# @5 A% ^ Weight=y;
}
! g$ q; ]- V$ Fvoid Human::GetWeight()
% L/ p3 C$ j( U" n& S9 N# \9 R{
cout<<Weight;
3 ]4 q5 z3 S) U6 h}
6 l' D* K  ]! `. D1 d. Gvoid main(void)
{
   Human Lee;
   Lee.SetHeight(172);
/ n8 m) V: Z& {! ?$ k* F1 a   cout<<"Lee的身高是：";
7 d- ?4 G: B# M; D" `9 }   Lee.GetHeight();
" {0 D7 G# q+ }+ R, d9 A   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
. `; o8 }6 ]0 M. ], n   Lee.GetWeight();
   cout<<endl;
}
; \" J4 n# M: i- @) L3 a5 l推荐第二种写法
! \! `' J/ V3 |  V" \. v2 P' [

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