25.类，对象，成员实例

(@_@)

第一种写法：
#include <iostream>
using namespace std;
class Human
4 Y/ v4 e- w% v1 q$ V  k/ R; p# Z. r{
6 f1 g# p4 S; H& I6 Ypublic:
void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
' n$ m# q' s$ C7 ^ void SetHeight(int x){Height=x;}
  ?8 b3 v% o  P. d  i2 n1 E2 _ void SetWeight(int y){Weight=y;}
' E# s. c7 n+ x1 Bprivate:
int Height;
* G3 l/ I+ x' e; ^6 @8 i int Weight;
};
5 ]4 ]6 o( N: S! z' f" u* g
void main(void)
{
   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
% R! H% f  C  t7 M   Lee.GetWeight();
   cout<<endl;
% d: c: y8 r" U1 \6 d% o; P}
第二种写法：
#include <iostream>
using namespace std;
5 L2 _; u' p) L( {8 _class Human
{
public:
/ ]; C7 N6 ^6 Z# T7 r void GetHeight();
0 H" c' K# o" N& u2 _* A6 l3 B    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
! N8 o# f4 ~- k% ~9 s7 {private:
/ V: \1 Q- Y( A* b' R( q int Height;
1 N0 c; k, x: v7 g int Weight;
};
void Human::SetHeight(int x)
{
* c" q6 j* f  K( ~" z( ~, D4 R Height=x;
}
8 m/ M# W. z9 z9 Ovoid Human::GetHeight()
0 D4 F. {: I% v' k{
( t" G2 h  {2 s; A; I# r cout<<Height;
" ^+ J) e4 e0 v# B1 n) {}
2 k  B9 W( `; M. |void Human::SetWeight(int y)
- U2 H8 D9 T$ b  X  `{
; ~6 o5 n" e* l Weight=y;
4 \* E/ T3 ~7 i}
void Human::GetWeight()
{
cout<<Weight;
}
void main(void)
{
! a$ h) ?" _. D* r: J# l- `0 N9 ?1 P5 |   Human Lee;
5 b  R- m" S+ D   Lee.SetHeight(172);
7 b2 h; P& D- f6 L, C, }9 N- N   cout<<"Lee的身高是：";
6 e' ^1 e# h, N+ ]8 Q8 ~$ j* u   Lee.GetHeight();
% U3 A& K6 t# _, U   cout<<endl;
( ?+ t& D; p: ^   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
, p3 [! D: J2 J* F& R8 e4 A   cout<<endl;
9 m4 R& D4 p3 c; f* H}
. r" X* ]- G& K" A* A8 [- b) q6 ^$ T' ]推荐第二种写法
. n7 F7 R) h' ]2 }6 N