25.类，对象，成员实例

(@_@)

第一种写法：
#include <iostream>
; p- y% c, O/ i0 D# ^using namespace std;
class Human
{
% R& e/ Z4 E6 C2 ipublic:
void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
5 y) G5 A# W7 _0 }private:
% H1 u' l/ q+ l( q int Height;
) m/ I3 d0 |, Z# x- \- O; ^! ~0 q8 x int Weight;
};
. a6 a! V; h1 b/ C: o# }
, a( @' `( O- J# _void main(void)
{
   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
, d7 r. V. i6 e# Q) Q) I8 Z; O# ]   cout<<endl;
   Lee.SetWeight(120);
) {& Y$ Q- D8 |, s) Y  Z   cout<<"Lee的体重是：";
   Lee.GetWeight();
0 \7 g, N. _; k   cout<<endl;
}
第二种写法：
, y7 p# Z9 T/ |& w; W* Q#include <iostream>
. t! q+ {* T* R- O: A) yusing namespace std;
! B- E# T5 }! x# `$ _class Human
& t& x  A# q. O! p- A{
public:
& }8 x1 x# u1 Z. p1 ?2 ~ void GetHeight();
    void GetWeight();
void SetHeight(int x);
) q8 q4 G7 r4 z void SetWeight(int y);
0 O' }3 p' f' r1 _: N- hprivate:
6 z; W4 I0 ]3 p' A* E% \  J; s int Height;
- z4 ]5 w9 K' T int Weight;
* P- f- R, H2 d/ [7 }};
void Human::SetHeight(int x)
{
Height=x;
0 H) u; p4 Z) H; a7 s6 m9 c: R}
* u2 p7 v6 E0 p6 ^% L# u3 `$ Nvoid Human::GetHeight()
{
; n9 f5 f' \9 V0 s3 k cout<<Height;
}
void Human::SetWeight(int y)
{
" S% _1 L( q3 A! G* F0 q Weight=y;
$ U; g! T) @! M# b% q# }}
1 M$ g" r3 G0 a" O. F2 |* E) avoid Human::GetWeight()
{
! J, o- c: y3 L: J. M cout<<Weight;
}
5 Q/ E1 _* {4 r: z9 n, S! v# \void main(void)
) M% U! {7 y( W/ c) A{
. u' }1 ~/ d# G* K8 P* ~+ e/ ]& S. J   Human Lee;
" V/ Z, T$ P4 I/ l' d9 H* \% E& }   Lee.SetHeight(172);
6 v1 _* V. U/ P- f: B   cout<<"Lee的身高是：";
   Lee.GetHeight();
: L7 w6 G! N$ i! F- w   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
, w0 Y( m+ H3 d1 m0 m0 e+ J5 Y   cout<<endl;
0 b/ Y4 y% N0 A}
  O+ E# |* X" u% p. ^7 a( Z6 \2 W9 K推荐第二种写法

/ p: u* p/ r; c( _* Q* J3 ?