25.类，对象，成员实例

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第一种写法：
4 B3 L- t9 n' N8 s  x#include <iostream>
; b; z+ m( m1 e& L" d/ jusing namespace std;
class Human
{
public:
void GetHeight(){cout<<Height;}
7 T5 E3 t8 l3 X void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
8 @, F$ k/ A% z5 G void SetWeight(int y){Weight=y;}
) \9 S8 X5 S, }7 Jprivate:
& b4 ?: I' y, R9 G int Height;
int Weight;
! W6 t2 Q+ F4 Z5 a1 @) Z};
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void main(void)
2 y) @) x; a5 j  a! i3 B9 x: j{
6 z. A" H2 O4 @9 n  T7 j   Human Lee;
; C6 H& a  L7 O$ ~  @   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
3 b, {# v9 x* g" R- v0 D: _   cout<<endl;
   Lee.SetWeight(120);
4 o* Q4 J  N1 A% H   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
}
. E4 e  i" d8 A+ o. X5 ?8 _6 p9 I" g第二种写法：
#include <iostream>
; x) N, i  K, }* y, X& W5 ]4 Eusing namespace std;
class Human
{
public:
9 [2 f1 [; S8 q; |( v void GetHeight();
1 Z$ S2 Z$ Q9 F    void GetWeight();
void SetHeight(int x);
, A$ C4 W; c( P void SetWeight(int y);
+ m7 t' ~* Q! m' m9 u6 qprivate:
( G0 r: L1 l1 ~4 S int Height;
# T4 X+ e! l+ C2 f$ v int Weight;
3 Q) d8 s" H: S4 l# {( W1 u! l};
$ M) I; K1 M% _3 h/ H2 B! a* jvoid Human::SetHeight(int x)
{
8 O% B4 J% n* T2 B8 Q* M; ? Height=x;
}
void Human::GetHeight()
: Q+ W4 V, o: y' w0 }+ T{
0 N( r9 ?: }1 S1 Q/ ? cout<<Height;
}
2 i" ]  J  C4 [3 A) q' Z$ Zvoid Human::SetWeight(int y)
  o3 H; J7 ]$ O4 ?$ ^3 \" t: T{
Weight=y;
& o9 ]% n, _8 |0 X: Q$ _}
void Human::GetWeight()
{
" b7 A' W4 u$ p) F cout<<Weight;
2 \3 O2 S, U. n}
void main(void)
{
   Human Lee;
7 h! t* C3 s! h2 O! k6 _   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
7 ?6 f0 S. M7 C, n) ^   Lee.GetHeight();
; s5 r% l$ j1 b5 b) d  X9 V   cout<<endl;
   Lee.SetWeight(120);
% y% r3 P9 O1 J) T8 W) R   cout<<"Lee的体重是：";
9 J- o- Y6 P4 U2 e9 n% c   Lee.GetWeight();
- }, Q9 q- A9 ~1 I; ?9 J  ~   cout<<endl;
}
推荐第二种写法

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