25.类，对象，成员实例

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第一种写法：
#include <iostream>
' [" ]  s% k; I7 ~using namespace std;
class Human
! g8 ~6 {/ j- T3 @3 }6 ]{
/ u  e0 p4 Z! v! y2 Npublic:
! E6 ?% A6 E5 M" L6 B, p9 } void GetHeight(){cout<<Height;}
+ Z# c, s) T4 }$ q void GetWeight(){cout<<Weight;}
; D" |. l5 G. ?  |* u: S( _ void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
private:
int Height;
int Weight;
};

void main(void)
{
2 _7 h/ s* A2 W, ?3 r   Human Lee;
  y* y7 j+ g7 X   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
2 V' R  Q7 E/ p  V   Lee.SetWeight(120);
% s/ p. ?$ t4 s+ Q, B- p   cout<<"Lee的体重是：";
2 Q0 C( w1 Q' ^7 p, `' K- F   Lee.GetWeight();
+ k0 B& D& H$ `# W3 r1 r; k   cout<<endl;
}
* d6 n' r  m8 @0 l第二种写法：
#include <iostream>
* e3 |, ?/ \+ v8 O/ V% {using namespace std;
, b( y, ~2 e' U) T8 u/ Y0 vclass Human
2 w/ |# s, T% M" v* j% d{
public:
7 ?$ Q/ S! H8 b- G/ j% K void GetHeight();
! a2 ~6 T& n3 X# c1 }2 i    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
private:
/ X" ?: f, Y3 E5 C5 q int Height;
  ?# }9 H/ g5 K) H  Z, j$ _& n int Weight;
};
( ?+ f2 N  n+ E8 Nvoid Human::SetHeight(int x)
{
3 ?5 K; W! U7 k" v" H  v% k Height=x;
, \8 Y6 e5 R/ Y1 x! f! w1 V* ]( L}
void Human::GetHeight()
+ [+ a$ j% V0 O( `0 X: e{
/ T9 s: H, L3 P  K2 O9 k$ w/ v cout<<Height;
}
void Human::SetWeight(int y)
7 B1 R0 r( M! {! X7 K9 [{
Weight=y;
. O  s) D8 U) a. g- `1 e}
: Y. L* X3 v% N' v9 F6 Ivoid Human::GetWeight()
{
cout<<Weight;
}
  L$ O( C7 ^6 j/ F' J9 evoid main(void)
( v/ L- v# x- k3 y+ u{
   Human Lee;
4 \9 l/ @7 j: T5 i9 w   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
+ h6 i& _7 Q; `) Z4 G; {5 i+ k   Lee.GetHeight();
   cout<<endl;
) Q( _5 o# P, o' x& i6 L! w/ V" s   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
. {$ t% B& K& F* s   Lee.GetWeight();
   cout<<endl;
}
推荐第二种写法

! X7 `3 N: O) T# N8 g
) s+ \9 l* o8 V/ r6 j0 @