25.类，对象，成员实例

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第一种写法：
#include <iostream>
using namespace std;
class Human
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; p. q) W9 }$ npublic:
void GetHeight(){cout<<Height;}
( ~" i) B* ]! P1 Y6 l! Z void GetWeight(){cout<<Weight;}
# |5 U( F0 g: H1 X. K' X; { void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
; @, j: c6 r, t  V" rprivate:
int Height;
int Weight;
};
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void main(void)
{
3 n$ x0 g' g& e) n   Human Lee;
& u& i9 s* n( n   Lee.SetHeight(172);
; A8 X2 a* N# j7 e; ?. e) d   cout<<"Lee的身高是：";
6 Q1 e* N8 h9 h5 _0 e: F( O   Lee.GetHeight();
# J, U: U0 E# x4 P4 K; T- C; Y$ U   cout<<endl;
   Lee.SetWeight(120);
- m) T. P2 X7 `7 \3 w! Q   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
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, X8 \( C- e9 \4 t. u. c第二种写法：
2 Q* s# a: ~, P7 Y' D0 y/ `#include <iostream>
0 G% G$ K; ]' N, U1 Susing namespace std;
9 B  n4 v, G/ \# Fclass Human
{
2 R3 X: j1 E2 ~% A# u- ?public:
) I% [% ~6 W2 l$ w void GetHeight();
    void GetWeight();
: a1 }0 v$ Y+ N void SetHeight(int x);
void SetWeight(int y);
( x+ V/ J- p: h8 G4 d1 h! F& yprivate:
6 O5 @. X/ ]* F+ y int Height;
5 h; y+ ^6 z5 C8 w int Weight;
};
void Human::SetHeight(int x)
& @8 y, Q1 m  l{
Height=x;
}
void Human::GetHeight()
{
cout<<Height;
}
void Human::SetWeight(int y)
{
1 y+ D2 F$ K" G! @8 s9 Z  u+ L6 o Weight=y;
}
void Human::GetWeight()
{
  ^4 T) a3 u8 v0 C  k, J# y' @ cout<<Weight;
9 W  j% r1 p- T8 E; p}
void main(void)
! D* ~# V0 Y. L. l: ]{
   Human Lee;
7 p% Z1 Z* G4 w, j' e( [   Lee.SetHeight(172);
, ?9 \' n( \9 I% M   cout<<"Lee的身高是：";
   Lee.GetHeight();
7 M) U1 m- g' U$ Y$ d" H9 ^5 s! y   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
}
推荐第二种写法
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