25.类，对象，成员实例

(@_@)

第一种写法：
#include <iostream>
using namespace std;
0 f$ M) J  n5 p& @; z- uclass Human
; l) p9 l, ^: t! }# B{
public:
void GetHeight(){cout<<Height;}
: a& Z3 Y3 G: h& |1 b) q( O* d void GetWeight(){cout<<Weight;}
6 N- Y5 E8 P; R$ b  W, C void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
  k  f- x9 ]( V9 ]private:
9 O# N& M3 d  K1 B8 k int Height;
int Weight;
};

- b6 C/ p" d; E4 f6 B& Lvoid main(void)
{
   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
% n8 f# F# J' w; x; z5 ~. A. X   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
' K6 J. C* w; }& m- o   Lee.GetWeight();
+ s8 H, `6 {. R   cout<<endl;
}
3 x8 v8 M/ o- V# H6 P第二种写法：
  o5 Z6 C0 h: z2 N# V; t% u3 @#include <iostream>
! p) h) g; b1 j4 @9 X2 H5 K5 xusing namespace std;
% A: B3 y: E- M2 ?) ]class Human
/ a$ \+ S- ~  o! W9 c/ J8 V# D{
public:
void GetHeight();
    void GetWeight();
void SetHeight(int x);
! ]( ?, r( t8 s0 m3 \- s( X void SetWeight(int y);
private:
9 v# G- ^7 s9 W* q# u* d* M0 e int Height;
int Weight;
9 C! x  @, S) a$ \};
void Human::SetHeight(int x)
{
* R. ?& z" `- t. o2 B2 w Height=x;
4 e8 B4 R. \* }! }  S  A  R}
- t( F! x3 i$ w2 t: Hvoid Human::GetHeight()
{
cout<<Height;
}
void Human::SetWeight(int y)
) ?9 `3 r6 Y2 g{
Weight=y;
  s& f0 Q" |' J4 t& A}
void Human::GetWeight()
' n4 n3 Z6 J0 Z. h) d, Y{
cout<<Weight;
}
; i; U/ `, |& m( L% evoid main(void)
: F( G5 O5 f2 J) z& h{
, x+ ^) }+ v( h; a' Q8 `   Human Lee;
   Lee.SetHeight(172);
1 I$ f: t3 ]6 g   cout<<"Lee的身高是：";
' ^) s- c" s6 t3 v   Lee.GetHeight();
1 ]5 m3 K, b8 l   cout<<endl;
  [- i0 \2 `2 f   Lee.SetWeight(120);
6 N. x" f4 `3 z+ O  G. G0 M, c   cout<<"Lee的体重是：";
   Lee.GetWeight();
" ?8 {; P8 }. f; P& \8 z   cout<<endl;
+ i2 |* k4 R; \" l/ K  y: }+ E}
推荐第二种写法
4 q9 G: z) F6 Q8 J
8 C/ K. F4 u! ?: x( d! T
6 r, B" U4 a7 H, V3 u