25.类，对象，成员实例

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第一种写法：
# _9 j: D! L* I#include <iostream>
using namespace std;
# c  o+ [0 s% A  v" R* ~5 i: Aclass Human
{
public:
4 b: O+ M0 \5 d. U0 ~- m void GetHeight(){cout<<Height;}
1 F& W- I+ M: V5 g' }  u1 G8 H  ` void GetWeight(){cout<<Weight;}
; r, G5 h7 O" u5 ? void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
private:
$ o; M; {. k' i+ g* J3 }2 g3 g" v int Height;
! |! [- q+ l3 m+ E1 ^) v int Weight;
};

1 N: T+ Y  f( ]) L  Z& svoid main(void)
{
. T' }: }: b8 |2 n0 b2 i; _   Human Lee;
   Lee.SetHeight(172);
- b9 c/ }( D" u   cout<<"Lee的身高是：";
   Lee.GetHeight();
" J7 t; h. u9 K$ e   cout<<endl;
8 {2 `0 \% c8 F" X   Lee.SetWeight(120);
" c$ d. i0 ?2 n8 F/ w   cout<<"Lee的体重是：";
& C9 a! `0 w5 Q# [9 A   Lee.GetWeight();
0 c' {/ |7 t9 P; c/ y3 J: R   cout<<endl;
}
第二种写法：
, a2 |. G0 U. B+ j: j: F#include <iostream>
using namespace std;
class Human
{
public:
void GetHeight();
; B8 V" c; I* e' n1 v# R6 J5 q    void GetWeight();
void SetHeight(int x);
! |* S8 J" t6 _5 l; d/ p* ] void SetWeight(int y);
0 k4 B' O8 L- vprivate:
# T5 U/ ^! w3 j3 K int Height;
: @! y0 `7 p7 X; y% B3 ? int Weight;
};
void Human::SetHeight(int x)
{
9 c( R- j# R+ D Height=x;
}
3 x" Z1 }& z1 A6 V  {: @8 nvoid Human::GetHeight()
{
cout<<Height;
9 T& A1 A. r9 k( S! V}
void Human::SetWeight(int y)
{
Weight=y;
}
void Human::GetWeight()
{
cout<<Weight;
8 c5 o4 ^9 Y* }" u. x/ `: }}
void main(void)
/ U: c3 _( ]/ a{
   Human Lee;
& L9 \  A' T6 x0 X1 y# i   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
  h6 L  S! l# W$ y   cout<<endl;
5 L% i& Q& b$ H2 }5 B# z   Lee.SetWeight(120);
2 h9 w  _, n3 J5 E2 ^9 H   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
+ m5 J7 R. T% `! u" ?  L}
推荐第二种写法


' b% w5 u. O, I9 V$ S/ k8 P9 I1 x