25.类，对象，成员实例

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第一种写法：
. ~( s6 r0 m; c/ b8 U- M, y/ ]#include <iostream>
. X- |3 C' R1 }( H0 susing namespace std;
3 T6 }# y# q1 b4 E0 Qclass Human
{
: c  @+ ^( m. @, K$ S4 }public:
$ ^8 t- W5 O- F1 c0 y" z void GetHeight(){cout<<Height;}
$ `* }$ E* Y% c/ L3 Q' O void GetWeight(){cout<<Weight;}
( ]! o* }3 N% _' u, [8 ` void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
private:
  v3 z9 \1 i1 Q2 Z% Y2 O! B* ] int Height;
% D) x6 W0 i9 [+ C. R% x6 s. ^5 G8 _ int Weight;
};

void main(void)
{
' H  b9 O# K" y9 b   Human Lee;
   Lee.SetHeight(172);
" ]+ s1 T" A, U3 V! J   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
  ~' q$ E+ r% H# f0 H, [   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
1 A: O0 d; `# L" ^. L   Lee.GetWeight();
   cout<<endl;
}
第二种写法：
: n0 Z6 b1 d4 J! R#include <iostream>
/ H9 n/ y7 L& Y: ?using namespace std;
class Human
$ p6 c+ [/ }% B8 p8 `1 V{
public:
void GetHeight();
    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
private:
4 k; ^) j5 g" e int Height;
1 V2 a2 Z7 C0 j2 {% P, h& ^( } int Weight;
};
void Human::SetHeight(int x)
{
$ ?' X7 d, ]  _% M* {& Y Height=x;
) K: l7 T, {" p$ ~6 Z! D}
9 g: K- C4 t# c! V2 Avoid Human::GetHeight()
{
cout<<Height;
+ Y# r0 Y1 S- ~* ]9 W; O. s) Q}
void Human::SetWeight(int y)
{
' t" m3 O, W8 A$ F9 \ Weight=y;
4 G. Z0 Q4 s! c, ]) `* D: W" q}
. @7 a! m" B: a" W5 H. @void Human::GetWeight()
{
- _- P, E0 M0 R! K  M cout<<Weight;
$ n7 M% ]8 u# _% S}
void main(void)
{
  p2 g: ?3 O+ S; I/ Q* X( z   Human Lee;
4 I  `$ B0 i" X2 U: E9 H2 i   Lee.SetHeight(172);
5 i2 W# \: D# P8 L/ D   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
0 w( s2 M5 W# s. X* Q$ G   Lee.GetWeight();
: S& _6 Q, z# `   cout<<endl;
! a3 m9 \+ e. e6 n! |5 l1 S2 C3 z}
0 t( ?! }% t4 K  L6 ^- [4 y推荐第二种写法


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