25.类，对象，成员实例

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第一种写法：
#include <iostream>
using namespace std;
class Human
{
1 r. X  t/ x. ^: O% U' D3 dpublic:
6 I. `" h/ m( Q2 z/ x void GetHeight(){cout<<Height;}
  ?  C9 ]' q! Q$ T) o) I void GetWeight(){cout<<Weight;}
8 t7 }8 I; n3 s6 A# `) V void SetHeight(int x){Height=x;}
5 |) u- m* R! s+ M- u; B void SetWeight(int y){Weight=y;}
# W8 l4 ?9 k) B2 _1 l0 tprivate:
int Height;
! o) U, D# F8 a3 t int Weight;
) g/ c0 O) |4 S  [};
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3 ?$ a3 y" Y2 A9 K" b. a1 S5 C1 E7 H# H4 Lvoid main(void)
0 e7 k- W2 y# O! b' u{
0 w3 G. ~  f+ ]& L   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
7 B0 c' o$ ]1 Z) Q5 ^   cout<<endl;
' g3 r. p- t6 ~$ l7 o+ e   Lee.SetWeight(120);
* ?6 s( J  r( f+ t   cout<<"Lee的体重是：";
   Lee.GetWeight();
% J- L$ o" @2 h) K! E% m5 J   cout<<endl;
}
$ t3 h$ P/ e& A% t第二种写法：
#include <iostream>
using namespace std;
) z! U+ ^+ \" |/ U6 \7 vclass Human
{
public:
void GetHeight();
" q5 C4 A/ k4 r9 o    void GetWeight();
9 H% t/ M+ T# I  `$ r) w" ` void SetHeight(int x);
( l0 L' X) U' E' Z" h7 b void SetWeight(int y);
7 r* B2 }% N3 s0 v/ D* Q7 Gprivate:
- k0 A  k' Q6 V5 r; {" I int Height;
* f. t3 n$ H1 R int Weight;
, B- P) M0 y- Y2 W};
void Human::SetHeight(int x)
7 |. n* i9 |9 p6 F9 d{
Height=x;
}
void Human::GetHeight()
{
5 O0 ?$ p8 W2 H* R8 u! g) V cout<<Height;
" V0 G* N. X. v9 U* _+ V0 z}
void Human::SetWeight(int y)
% J& D) E! Q' i5 l0 L{
. F7 t. p# s: n Weight=y;
}
  Y: e$ q) g7 |# a5 {void Human::GetWeight()
{
4 U1 S# T( I6 t4 @2 r8 X cout<<Weight;
. G. G- Z, h$ ^' G, X}
% [2 `. d' Z7 a2 ?7 b3 h& X6 hvoid main(void)
6 |, m* r6 U6 F* m3 \& K1 M2 E6 ]{
: l: V& ^6 X& _6 ?   Human Lee;
7 n* f$ {5 L+ N. _4 q8 N   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
6 ^" P6 u9 |% n0 r3 n$ R& [  Z0 |$ L   Lee.SetWeight(120);
; S* P) y5 F, E# }   cout<<"Lee的体重是：";
. J  R, P- s, j4 }0 r$ O7 ?   Lee.GetWeight();
   cout<<endl;
}
推荐第二种写法
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