25.类，对象，成员实例

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第一种写法：
4 `8 {; s) V# B$ S5 k( u#include <iostream>
using namespace std;
class Human
{
public:
  t# ]8 P; p, B0 e* Y void GetHeight(){cout<<Height;}
: z3 X2 h0 k) H7 z6 Q# V# o void GetWeight(){cout<<Weight;}
2 t' W4 |. n) y, x; q7 |0 r# f void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
! B6 A/ W( ?  _$ P1 x+ K# b' pprivate:
int Height;
& n- s3 y, \; p& E% E( d int Weight;
) |- ?$ T' d5 V( y4 o};
- i; r' m) E. R2 B" Q
9 I* |0 ?! w# y1 H  n- u. _: Yvoid main(void)
  D) @3 f: I$ A{
   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
2 {6 y' m9 c% M6 p   cout<<endl;
   Lee.SetWeight(120);
2 k: E. ?! X* X0 Y/ ]; n9 q   cout<<"Lee的体重是：";
   Lee.GetWeight();
) Z. [) i8 g8 S7 }2 ?4 E   cout<<endl;
) v4 O% G7 D2 Y! j) `" q}
第二种写法：
#include <iostream>
2 w$ d4 s* e* T- Xusing namespace std;
class Human
: Y2 h- c/ }  o4 r, S- O{
! H- T! q( [1 l$ ypublic:
void GetHeight();
    void GetWeight();
void SetHeight(int x);
/ P: J# N3 g) |8 E+ B( N void SetWeight(int y);
, z2 H9 d! s8 v4 l& uprivate:
% Z6 x* N4 A- K int Height;
int Weight;
5 o8 ^  ]( [2 p) C7 n};
  ?9 M1 h3 H# U. C, u, svoid Human::SetHeight(int x)
{
Height=x;
; }% f& t6 A6 V2 p}
  Q2 k3 j2 H# z! w8 L+ Nvoid Human::GetHeight()
{
cout<<Height;
}
void Human::SetWeight(int y)
3 X# h& Q0 c& \% [: S- C{
  @% a& C7 l! p4 A" \4 n2 g+ b* u Weight=y;
9 s  N* A7 ]! R; l/ S9 x0 R' u}
void Human::GetWeight()
{
cout<<Weight;
; L. U! ]) E& H" W}
void main(void)
+ p0 ?6 u  r1 h" w# b( h2 K{
   Human Lee;
   Lee.SetHeight(172);
: z) P$ m2 s& A9 h' X* g/ H7 p   cout<<"Lee的身高是：";
1 ^' }$ J6 ]& {- o+ D& d   Lee.GetHeight();
   cout<<endl;
: x5 j, ]( \: u, ?! V2 U   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
}
推荐第二种写法
3 A7 i9 \1 t( W. M  K" _' B/ ]

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