25.类，对象，成员实例

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第一种写法：
1 }$ {( N' y( |1 x2 N" a3 O#include <iostream>
6 l: R0 h7 Z7 eusing namespace std;
class Human
2 e3 x' D" ?& D0 r! w, n{
1 z: Q& C, w2 v0 ?public:
void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
5 c, t# e7 X) V' u8 E void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
private:
int Height;
int Weight;
};

void main(void)
{
1 `$ K6 |+ |* F   Human Lee;
. u2 b. a, g: [1 p# v   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
0 E; k6 \; h- K   Lee.GetHeight();
$ `) w8 Z; x7 O$ i   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
  a  W' }. i: c5 N- ^- Y   Lee.GetWeight();
4 J  ?; O; y2 q" |   cout<<endl;
  z! P( K4 w3 t}
第二种写法：
! C% L0 g: M5 G4 Y' t' C#include <iostream>
0 @+ Z7 [( _# s  w: musing namespace std;
class Human
3 I" G( {$ j' d* H{
, `8 W+ Q" L6 r) A3 m* n: fpublic:
void GetHeight();
    void GetWeight();
' a) x7 G" D+ c. D2 p void SetHeight(int x);
void SetWeight(int y);
private:
int Height;
, l3 |: G  e/ f7 D/ G int Weight;
};
4 r3 Y+ g, \: b0 D5 _1 evoid Human::SetHeight(int x)
0 m) ^) ?1 A6 c  n! h{
# l0 s! f5 M. a# ^- f Height=x;
}
5 z" ~- _( Y7 N" h# A5 |void Human::GetHeight()
+ [3 m/ D3 G2 p- y0 r{
& h/ V5 r8 I" O" T3 ? cout<<Height;
/ P; A8 A% z5 m0 l! T7 |% i; ~}
( O* k0 x+ P$ y2 {6 j$ e3 J4 Pvoid Human::SetWeight(int y)
{
Weight=y;
}
; ~, ]' f, e8 c8 Avoid Human::GetWeight()
{
cout<<Weight;
$ Q. v8 x: D8 Z; Q4 W}
( M, `' z4 e1 }void main(void)
{
   Human Lee;
   Lee.SetHeight(172);
3 ]  }: \7 W5 K- C" R   cout<<"Lee的身高是：";
$ ^  Z7 A  J; l$ A  r+ X   Lee.GetHeight();
# b5 L+ h+ ]% C$ A   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
}
" V, t  p) m; l( K# G$ x推荐第二种写法