25.类，对象，成员实例

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第一种写法：
#include <iostream>
5 o2 j' _9 `& P/ V- b: A; Kusing namespace std;
2 I9 y1 |# R9 ~4 i4 @8 d# {3 Q& s) i, mclass Human
3 O8 Y3 C6 c: N2 |# b& r) N{
public:
void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
/ s" o* M( z! S void SetHeight(int x){Height=x;}
3 E! i# A( I9 q1 ~8 t) a3 u void SetWeight(int y){Weight=y;}
private:
int Height;
/ n# ?7 B; E* t  n int Weight;
6 Z1 p. A/ F  u9 \, p# [8 |5 P};

% f0 S6 I1 R: ^; q- n+ Tvoid main(void)
( d& N. {' h0 B+ v7 Z" k0 {, N, b{
   Human Lee;
   Lee.SetHeight(172);
) X: j" O  Y$ E+ m* S1 t8 [   cout<<"Lee的身高是：";
   Lee.GetHeight();
- G  u/ m0 V% ~+ c0 L# d$ J2 i   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
% b6 d) E( ]4 k/ R   cout<<endl;
}
+ H- V! @; S3 u1 ~' e& J第二种写法：
#include <iostream>
using namespace std;
class Human
" B8 e0 q' X% v8 ^{
public:
( O  V7 Q& {4 L7 U7 l' { void GetHeight();
    void GetWeight();
9 o# C9 W7 }0 T- a, A4 m- `+ M void SetHeight(int x);
4 h2 ^- P* o; J& w1 v void SetWeight(int y);
private:
int Height;
# n& o3 r3 A2 L, z: n int Weight;
3 j% `8 P. ^! g};
% G2 q; [! ^  U+ w+ F7 |* Nvoid Human::SetHeight(int x)
# O* U% I& n6 G" I- z0 g{
' K& B" F+ h2 z7 h+ h% t0 t Height=x;
}
0 W) @9 Z4 J9 R2 A, M4 g8 {- bvoid Human::GetHeight()
- ^8 s' @/ D) {: Y{
cout<<Height;
" `& y+ t# B3 i3 @6 B  \0 n. F7 `}
void Human::SetWeight(int y)
{
* e1 K- O* j1 N! U6 i$ T) P Weight=y;
}
void Human::GetWeight()
{
cout<<Weight;
}
. M; g# j0 O2 ovoid main(void)
6 j# a* K8 J! {{
   Human Lee;
   Lee.SetHeight(172);
, l. I' X3 n+ h* ^& I5 X7 z   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
! A. E7 J0 m) i3 l   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
3 ~% }. S% c# z! j) _9 L}
推荐第二种写法
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9 s* _) H0 n, P! I+ o# X4 f
, `0 n, G2 R8 l8 l, |0 Z3 `