25.类，对象，成员实例

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第一种写法：
#include <iostream>
/ N* Y1 F: B' q9 kusing namespace std;
5 S' W1 E. P0 E" K% G* X3 w4 vclass Human
{
public:
7 c. ?3 m: [; q4 Y void GetHeight(){cout<<Height;}
1 V  Q1 o# O5 _9 t void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
" W- W2 N( `5 l$ s- B8 Q: B void SetWeight(int y){Weight=y;}
private:
int Height;
! e; m" C, n" P  @ int Weight;
( m2 o3 j7 E) s5 N( U4 W};
! s5 o5 `: t& H" Z$ J! Y
void main(void)
9 L# e: }1 q" e, p8 V( h{
3 \6 S! D$ G6 v  E& x   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
  D0 Q4 t+ Y: ?& ]   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
7 ^/ @) H! n8 U7 c2 r   Lee.GetWeight();
   cout<<endl;
}
; T( }: [7 o8 m, k- I& o第二种写法：
#include <iostream>
4 z, T" R6 F. [+ tusing namespace std;
) r2 V+ L" b6 C* w# [. E, {class Human
4 o) W# O0 ]+ @3 u3 q9 f3 v{
2 P5 {& ]/ j* z+ Mpublic:
# S# k" x' K/ }1 F- r void GetHeight();
) w/ C6 N' L* B% R. Y    void GetWeight();
0 P* G1 z* x, b. t void SetHeight(int x);
void SetWeight(int y);
private:
int Height;
1 R) L+ W8 j( w; a' j! ^; E int Weight;
5 R& ?2 F  t7 T! I: s! J};
void Human::SetHeight(int x)
{
Height=x;
}
; P! B6 T+ _) x3 c# c# X2 ~( \& wvoid Human::GetHeight()
- P9 q% p' I* z  S9 O* \{
/ H% u: V. g. H5 z) U, t cout<<Height;
}
void Human::SetWeight(int y)
& H1 n0 ]. n7 V8 t% i" G{
Weight=y;
2 _: Y3 a1 H/ R! f}
void Human::GetWeight()
{
cout<<Weight;
! X2 `" N) N. h) n$ N}
void main(void)
{
& A$ Y& X/ F1 Q4 C( B4 H   Human Lee;
   Lee.SetHeight(172);
) \* V+ Y+ M) G" N1 j3 S, W6 f   cout<<"Lee的身高是：";
! o( k! o  z7 @; p) e! M   Lee.GetHeight();
$ F  D% N7 j# _! A; t& U* b   cout<<endl;
   Lee.SetWeight(120);
  @0 u) e+ s1 [8 F$ ]. i   cout<<"Lee的体重是：";
! l2 D# x( U) B+ `5 Z4 A   Lee.GetWeight();
8 Y9 K" W2 O0 k% j* p4 `4 ?   cout<<endl;
7 `+ J6 O2 U  E' j0 O}
推荐第二种写法

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