25.类，对象，成员实例

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第一种写法：
8 w  g+ d4 N- R/ T3 I#include <iostream>
using namespace std;
  ~  B, `) ?  G  _* f1 m* H2 Bclass Human
{
public:
void GetHeight(){cout<<Height;}
, h4 |7 Z. v6 f7 @& a void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
private:
6 u, _* P4 L$ W9 V int Height;
int Weight;
};

void main(void)
1 y7 a2 o, \2 Q{
" u$ @1 W$ o3 F- k9 C   Human Lee;
   Lee.SetHeight(172);
0 E  C1 `$ s, s   cout<<"Lee的身高是：";
9 _7 c8 ^7 D4 z& h8 N. B) P/ r" d   Lee.GetHeight();
4 }, m% a; i3 y7 [. B/ \, X   cout<<endl;
   Lee.SetWeight(120);
; c' w4 {! ^/ T" l- I; D1 S   cout<<"Lee的体重是：";
$ y5 Z% e9 ^: u' G   Lee.GetWeight();
6 K  [. L1 b) k* B/ o   cout<<endl;
}
第二种写法：
#include <iostream>
$ }+ {7 |: W! a0 zusing namespace std;
class Human
8 R. C! l7 c0 v( u' |/ g{
; y  w' h5 ~) D  \$ a  ?) `public:
, w+ b5 r* K7 H. t) y void GetHeight();
* P' |! {( B: z- T    void GetWeight();
" @& a. i; j" V7 T. f: k( G+ @( W5 m void SetHeight(int x);
void SetWeight(int y);
- P6 E8 h1 t1 a' a, F& @private:
! _' U9 L: ?( M( V8 ?# }; a int Height;
8 C7 S9 I" E! q, t int Weight;
& n9 F4 E5 V4 F5 d, r7 |};
9 e; V2 b6 n' qvoid Human::SetHeight(int x)
{
" Z6 h4 }% k" h8 x0 I4 r Height=x;
2 N) {4 D0 D  w& n+ ]2 Q, \4 A}
void Human::GetHeight()
: S5 j- |& V6 Y4 d{
) {/ L+ s: A# q/ Y+ X cout<<Height;
1 H( O0 O- m" @$ j}
$ M# ]) ?& ?* k+ L& V" N7 s( p5 s" Zvoid Human::SetWeight(int y)
{
Weight=y;
' l' \0 E0 `  b}
void Human::GetWeight()
{
& Y3 c2 p1 S; n" {3 K' v cout<<Weight;
}
void main(void)
- t  d, l, V/ `+ a. W. S{
2 t) _/ K! ^: O# w8 ]   Human Lee;
+ l5 b, Z; A6 m# t+ O; z2 S   Lee.SetHeight(172);
/ ~  ]( ~# w5 H- u0 W% R3 ?   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
. K) y, c, N5 Y! p& i0 q& L7 K   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
}
推荐第二种写法
0 Z+ w: `0 ?3 M