25.类，对象，成员实例

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第一种写法：
4 D, d8 e5 r* Y#include <iostream>
using namespace std;
5 Q) t2 N; q1 z7 \/ P* d, e, r+ I4 x2 wclass Human
{
public:
void GetHeight(){cout<<Height;}
  N, t9 F9 M+ `! `! K7 H void GetWeight(){cout<<Weight;}
& k/ [0 Z7 t1 l void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
private:
int Height;
int Weight;
};
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void main(void)
{
) d8 q+ n$ Y; K& E   Human Lee;
   Lee.SetHeight(172);
( b. A/ J+ s8 V: [/ }- V$ _   cout<<"Lee的身高是：";
% ~! t0 _7 B( T! o   Lee.GetHeight();
   cout<<endl;
+ [8 E/ ^6 [& x1 O   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
9 C3 E' ]# @. V; ?3 k1 A1 z8 L   Lee.GetWeight();
   cout<<endl;
}
) F' V  p* x9 U1 D" r第二种写法：
#include <iostream>
' D: F1 |- b: y# u/ J. _using namespace std;
7 c- n# W( E- Yclass Human
{
public:
5 @9 {" ?# {; y* z6 H2 o6 P void GetHeight();
" i7 E: A! p7 u: I9 ?0 R! A+ Q    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
  Y5 e3 a; {4 F( [private:
int Height;
int Weight;
};
# [  u, h5 R' t# Jvoid Human::SetHeight(int x)
{
Height=x;
) E6 f# V2 J, m}
void Human::GetHeight()
{
* d3 U  R$ L! q0 |$ A cout<<Height;
; n+ B2 E% J* S, i7 ]& B& S}
void Human::SetWeight(int y)
9 ~* x$ _7 @, m; \{
& s% Y: L) S8 u/ @, B Weight=y;
}
- q* K$ y8 `4 x) h9 uvoid Human::GetWeight()
{
7 T) A7 a; m' D7 y0 B3 H$ b7 F cout<<Weight;
# N* }  C1 }; b( }$ E}
* k( o8 G  F' B0 R6 Z9 ovoid main(void)
0 ]' Z( L: N% D% s{
) z$ s! |7 @+ ]% F* I; q   Human Lee;
% l- X& _4 h3 p+ ~$ r( z   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
, O) B$ b4 a7 q9 O* g   Lee.GetHeight();
   cout<<endl;
/ r! J2 h6 a  C, H+ u! D3 v   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
! D4 x8 I9 j# M% {   Lee.GetWeight();
9 r3 ~- o4 i5 p# z5 u; t   cout<<endl;
}
) z$ D" b: I9 ]. P- G4 g0 D- q1 v  h推荐第二种写法

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