25.类，对象，成员实例

(@_@)

第一种写法：
" f# c. Y8 i. Z6 n. f4 c+ Y#include <iostream>
) m# R$ k) ~1 ?6 F( E$ U1 q" D1 s8 kusing namespace std;
class Human
/ {+ i3 y0 @/ X{
) [5 Y( I) s% k3 z# X- D3 v. Ypublic:
void GetHeight(){cout<<Height;}
6 f4 T: F- ^9 t5 n7 d. d void GetWeight(){cout<<Weight;}
: l! q  d* E6 d1 S3 v void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
8 R7 a* Y( h$ P  gprivate:
% l8 `7 Q$ }& _5 p, e% _+ _ int Height;
int Weight;
};

2 v' p/ T# P% r+ q) J$ I2 Dvoid main(void)
7 Y8 _) ^5 B. r; T1 ^% X{
7 k; r0 M4 N6 e4 b" }   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
2 b7 P. ?# f* ?7 ~/ A   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
  O1 C4 o+ u5 ?+ {7 c/ s4 q; \   cout<<"Lee的体重是：";
2 v/ L8 U5 W2 V  I0 l   Lee.GetWeight();
# R% H) c# w0 I   cout<<endl;
9 Q( ~7 G) m5 r: p. U5 `! K8 V( |- I}
  ^& C/ ^! o0 d- R第二种写法：
7 Y8 f5 v) H2 O' e# e0 l8 T/ T/ U#include <iostream>
! W/ y  X5 t9 m  S- Z; y) K5 ^using namespace std;
class Human
{
public:
void GetHeight();
    void GetWeight();
3 f% |! l/ w4 m) D$ z/ k void SetHeight(int x);
void SetWeight(int y);
/ w3 `& e  {( o- V! Nprivate:
int Height;
int Weight;
. U7 C/ S3 n0 {+ j};
  O- F! F  P, p; k/ R$ ?3 e2 P' M5 nvoid Human::SetHeight(int x)
, i# d7 e& F4 G, Z$ y{
Height=x;
}
void Human::GetHeight()
{
cout<<Height;
}
void Human::SetWeight(int y)
{
' ?6 w6 D5 @# y2 r5 x Weight=y;
}
( y" A' |; a6 e/ x. e% qvoid Human::GetWeight()
! X3 F' s! ]- l# z! k9 k7 h4 @4 ]{
; Y" d9 P3 I3 Z7 u cout<<Weight;
}
% T4 S( }3 E& Fvoid main(void)
4 t( E7 U2 r( j' i{
   Human Lee;
* z3 C! d! w# w# @* ^   Lee.SetHeight(172);
0 U) X( y4 b7 a# I+ i   cout<<"Lee的身高是：";
   Lee.GetHeight();
$ h- n! X& T2 g) V   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
1 f* p# F9 k9 Q, l' J   Lee.GetWeight();
1 K' q' I3 {9 P& r9 |, c   cout<<endl;
* j  _# f' F+ L  V! T0 n, x}
推荐第二种写法
) j8 {$ V3 s# H
# ^. w: a+ n, G1 w) C