25.类，对象，成员实例

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第一种写法：
( }4 w& x- ]: z: e8 `#include <iostream>
using namespace std;
) f  Z2 h- Y  `4 wclass Human
{
public:
! w/ H9 Z1 q$ w5 N! n9 { void GetHeight(){cout<<Height;}
& g; n' ]% Q: A% K6 l$ A void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
0 T+ q' @. }; i  \1 M2 B void SetWeight(int y){Weight=y;}
' a6 |+ p2 F- D8 jprivate:
% a) G! j0 T6 G; |6 t7 i+ I: U0 c% g int Height;
int Weight;
& a- L5 a6 U1 D5 @% |; G4 c};
6 x* p- p" i# _* ]* Y
void main(void)
' _0 C0 ~) P% k" Q$ H( b{
   Human Lee;
2 G: P0 p0 \6 O' M# H8 K( r   Lee.SetHeight(172);
0 U& L2 H/ Q9 G% i5 i5 C   cout<<"Lee的身高是：";
   Lee.GetHeight();
3 N. N! ]" v# h$ K% q% g   cout<<endl;
   Lee.SetWeight(120);
; U  e8 s7 ]7 e* J8 {8 I   cout<<"Lee的体重是：";
# [. @0 I" \1 j3 V   Lee.GetWeight();
   cout<<endl;
}
5 ]1 Q6 M! a2 t. z第二种写法：
#include <iostream>
using namespace std;
class Human
5 Z' }- P# l  k{
public:
void GetHeight();
    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
% k0 r6 S& E1 F8 q- Vprivate:
. H" {6 S. S+ ]6 }. k& n) \( T int Height;
int Weight;
};
7 j5 }* r) M6 y/ u% U) u  T2 ]3 t4 bvoid Human::SetHeight(int x)
8 S% x3 N8 v, S5 e$ c0 }' a{
( I8 h) j& ^; G; \! i* U7 K Height=x;
4 p4 P. s9 e" \* _0 S/ v}
- ^! V$ Q' B$ R9 R# uvoid Human::GetHeight()
{
: y( r5 ~) h/ d: q: B, ] cout<<Height;
$ R3 y7 C- N5 }0 I}
void Human::SetWeight(int y)
# m+ m1 H& b0 D7 y2 [3 ]8 l7 S{
, M8 x* X" W* j! ], l Weight=y;
}
+ \! N* _0 C& K& L5 P! yvoid Human::GetWeight()
3 J! V' M2 ]+ i$ O{
' k% G; y/ Y( S. w& J  q) C  R9 e  S" j cout<<Weight;
}
void main(void)
{
   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
- |3 t* W0 }% ^; Z   Lee.GetHeight();
; e9 Q  M  Y7 F& T  t+ w   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
* I. l7 g( Q5 F$ |0 M   Lee.GetWeight();
   cout<<endl;
}
推荐第二种写法


* W$ ?" k: J! y! ?  T" V