25.类，对象，成员实例

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第一种写法：
#include <iostream>
using namespace std;
class Human
0 k6 `; j/ g+ L6 y* g9 K{
public:
7 b; ]4 B8 w8 z; c" X void GetHeight(){cout<<Height;}
6 ^5 C9 P; m4 y2 c4 [; I void GetWeight(){cout<<Weight;}
5 \$ A4 }9 R) ~0 j2 D8 Q0 r; g5 E void SetHeight(int x){Height=x;}
4 @! L' d) ?1 b/ h# p1 O void SetWeight(int y){Weight=y;}
private:
' k0 @: I# q1 F0 W int Height;
int Weight;
7 ]. k' L: [# Q5 |* a: |# W2 v6 d3 Q};

void main(void)
/ Q- ~/ v: I& g; Y{
   Human Lee;
   Lee.SetHeight(172);
0 s4 [% Y" b9 X8 e, |/ b+ e- Y   cout<<"Lee的身高是：";
6 Q$ B" p% q4 G( Y7 \+ ]   Lee.GetHeight();
   cout<<endl;
9 ]9 m6 N$ I5 |) o8 I   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
}
第二种写法：
#include <iostream>
using namespace std;
class Human
{
% R& }5 h" N7 npublic:
# t6 h  b7 t* a0 q void GetHeight();
    void GetWeight();
void SetHeight(int x);
1 Y# X+ a8 G: g) w void SetWeight(int y);
0 w8 ~6 F5 i* B- Bprivate:
int Height;
int Weight;
};
  j5 K3 {/ T' K  |) t! l" W8 ~( Wvoid Human::SetHeight(int x)
# F: V' K/ ?5 m1 T$ y{
Height=x;
}
) E9 g& _4 j  B2 b( k" ~void Human::GetHeight()
{
; x9 Z, J2 j% S% g7 S/ K cout<<Height;
}
void Human::SetWeight(int y)
{
8 a* c0 I& u3 p4 y+ l Weight=y;
9 m1 `: e; g5 w0 h  M8 [}
. R: |$ |0 _4 S/ ~$ M$ Kvoid Human::GetWeight()
$ m3 Z6 B! c* b: w+ Z{
0 u! i0 A0 h8 F: Z( m cout<<Weight;
}
; I: E  N! Y; l: Uvoid main(void)
{
7 i: P7 S: _/ y; c/ T   Human Lee;
1 n% {* E2 F! M2 \/ S   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
% ~! p: ^: _6 `8 H( c   cout<<endl;
   Lee.SetWeight(120);
- e$ N, ~, k+ O" f& Q   cout<<"Lee的体重是：";
& H- h4 ?9 R& o  w/ E) ]4 m& @   Lee.GetWeight();
/ Y, J2 x$ i( S& u& p   cout<<endl;
% K* l/ ^: u, q# }7 Z}
2 P: X- W/ o6 b* t9 I4 L. g! Z推荐第二种写法