25.类，对象，成员实例

(@_@)

第一种写法：
) j3 i- H# B. t' H: Y) v#include <iostream>
* z+ Z' s/ I/ }5 _: k$ j0 G3 n) fusing namespace std;
class Human
{
public:
1 k( O8 e6 g- \) T- S1 v2 z$ I- ^ void GetHeight(){cout<<Height;}
6 K& X% A: f7 Y3 A! @; _2 o void GetWeight(){cout<<Weight;}
( H: d* E: q% {, ^8 X void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
private:
- q9 Z% D/ [) c8 x int Height;
int Weight;
};

void main(void)
{
   Human Lee;
2 m6 l" e' s  T& i6 t   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
% a* X' Q# p0 f4 L   Lee.GetHeight();
7 c+ s: _% k& X! i1 @) ^  e   cout<<endl;
   Lee.SetWeight(120);
9 |2 c+ x" N; Z# w   cout<<"Lee的体重是：";
. \" v7 n6 K. |8 t$ x2 B! d) J  R* m" A   Lee.GetWeight();
   cout<<endl;
* f9 `& R, K5 ~& G+ L1 A! d" e}
: E4 T+ `, P3 a5 f! F第二种写法：
#include <iostream>
) ^" I; U- ]) u3 S% ^using namespace std;
class Human
. a1 t. I8 l% L6 j1 y{
+ Y  ]# o7 L7 t# n' mpublic:
8 a+ a/ |+ B+ e& Y1 r' h void GetHeight();
    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
private:
int Height;
) m! ]3 A( o; K( k# z int Weight;
! p' ?7 a5 N/ t2 U};
void Human::SetHeight(int x)
{
Height=x;
}
void Human::GetHeight()
{
" [# y( r; Q. ]9 { cout<<Height;
}
void Human::SetWeight(int y)
* R* t3 S* B' f; i{
. p. ], }+ H, c4 N, ~ Weight=y;
, d$ Z% d3 ^# u' K) F) s- c}
void Human::GetWeight()
3 k8 v5 |5 P3 z: g+ j, p{
cout<<Weight;
}
void main(void)
{
. o" L1 ^8 I; ^7 k& j  k7 r: G   Human Lee;
   Lee.SetHeight(172);
/ o# V$ Y8 x9 p6 n1 A   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
4 i+ I0 L7 X* R; ~   Lee.SetWeight(120);
& |" t# A( d9 J   cout<<"Lee的体重是：";
   Lee.GetWeight();
+ K% `( R; I  f4 r- O" F   cout<<endl;
& o5 P+ c4 l) f- a  O}
推荐第二种写法
0 U" T6 B. h7 r* ?' h5 S  B
& P+ {+ w5 Q& M* A* ^" X
3 j- ?2 r, t9 I" y* i3 H0 e( c