25.类，对象，成员实例

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第一种写法：
1 \1 Y! Q% g5 n#include <iostream>
. e% t. g8 D3 K" gusing namespace std;
: Y; i3 f& h% r: h. T/ l; Tclass Human
4 n# ]$ R# u$ k4 }{
public:
8 j5 y" U8 Q' h0 P void GetHeight(){cout<<Height;}
' |. y) d+ X0 J  ]/ k; F void GetWeight(){cout<<Weight;}
  I% x6 m& d, d) g' P$ K6 _ void SetHeight(int x){Height=x;}
2 y6 M2 C: Y4 [1 X3 d! n void SetWeight(int y){Weight=y;}
! w. J% a% @. h# m- o* ^- Yprivate:
4 Q6 v8 z9 b/ V1 u int Height;
int Weight;
5 x& B+ D$ V/ k- v' p};
! ~5 r. n3 H0 A( p5 m5 ?6 L
* }) S9 ]0 ~2 \2 Nvoid main(void)
{
$ L% F' \/ j7 U+ [   Human Lee;
( A) I- C8 r' g$ y  x& V6 |5 X   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
$ @; U$ I9 a4 X. B9 v2 J, p   Lee.GetHeight();
   cout<<endl;
3 m' p5 B2 D0 n  s) Q   Lee.SetWeight(120);
$ m# _" V! r8 O- G# B6 f% s   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
}
1 F! X2 y: b8 r2 W第二种写法：
#include <iostream>
4 X8 }# `& M1 r" @  A/ a+ m4 ausing namespace std;
class Human
! L) [0 ]) h+ [* x3 r{
public:
void GetHeight();
    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
+ ]8 o1 o  N& q& q" x2 yprivate:
" j  a: v3 Z5 L  y* a int Height;
int Weight;
};
" J8 ?0 v. P9 H1 l: o- V4 [void Human::SetHeight(int x)
# \  u7 K  h7 G( R{
Height=x;
: }; Q% }6 h+ U3 r5 d  V7 Z' M+ r}
void Human::GetHeight()
{
cout<<Height;
}
void Human::SetWeight(int y)
' P& v) l+ V# t0 Z/ W{
Weight=y;
' r) k% m) a7 h& Y) e/ `2 H}
$ l! t9 c! P. ^# e' [; t2 lvoid Human::GetWeight()
" R8 g" s2 R$ {% p: x2 x6 Z; u{
% j1 k/ _3 b: W6 _9 i! P cout<<Weight;
}
void main(void)
6 e( t/ l$ b1 I+ {{
  u, t4 J/ \. x5 H4 z$ x   Human Lee;
   Lee.SetHeight(172);
6 `) V6 n( _; l( U  F   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
( ~6 @( c9 s0 q* v   cout<<endl;
}
推荐第二种写法

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