25.类，对象，成员实例

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第一种写法：
#include <iostream>
using namespace std;
% D' E; f+ l/ D3 O/ Q3 U% g+ Kclass Human
{
9 B' p, I8 o% \4 R" Zpublic:
void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
3 u7 z4 B; W. b& r" h" ? void SetHeight(int x){Height=x;}
8 o. g: u- b5 L. w' f' b0 X void SetWeight(int y){Weight=y;}
private:
# x" W4 J9 i6 Z9 p3 O int Height;
int Weight;
};
( H: I7 j! C: t! a0 w4 t7 w  t
6 n1 X% F' X3 m! w! Evoid main(void)
! V7 {' c. d$ a) d# r, P- L7 g, N{
   Human Lee;
" `+ h; g8 k6 M# w! Y) V4 s   Lee.SetHeight(172);
+ i) N) b8 F7 C' ~8 p   cout<<"Lee的身高是：";
   Lee.GetHeight();
7 u% H* x2 G( e: t9 Z   cout<<endl;
   Lee.SetWeight(120);
9 g6 ]1 {' z+ _4 }$ t  ]. I   cout<<"Lee的体重是：";
   Lee.GetWeight();
0 Y" y+ F. M9 ]5 }+ {3 ~2 Z   cout<<endl;
; ~6 h. [' d' A}
第二种写法：
- E# `; f7 h+ I  [) l#include <iostream>
9 a/ t! |8 `% q9 C/ Rusing namespace std;
2 c: B. I/ f8 l0 Eclass Human
{
public:
: W; F& O. f+ O9 H0 X% _- q void GetHeight();
    void GetWeight();
5 m% b  I! V- o. {+ k1 q2 y3 _ void SetHeight(int x);
' b% m3 F  S! t% ]2 ~ void SetWeight(int y);
/ @/ u5 B' Q; h! O9 N+ Bprivate:
int Height;
int Weight;
};
) }) T" w8 J! r- c4 n/ ~$ ^/ ^void Human::SetHeight(int x)
{
Height=x;
- J) r0 W2 Y) i2 R+ v: r+ S, ^}
void Human::GetHeight()
+ C& U1 ?, o  K8 \. \5 R. A& t{
4 s) r* G6 L/ L cout<<Height;
}
void Human::SetWeight(int y)
' q! P) T( x% c3 z" Y* G7 z/ f{
% ^. N5 y4 a( d: b) Y# i: F! b5 c Weight=y;
}
2 `* V) X& m9 S& y# l" e$ Tvoid Human::GetWeight()
{
cout<<Weight;
4 Q! l0 G4 ?5 l/ U}
void main(void)
{
- ^9 n; }! U* }7 Q1 H' S   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
. e! `, u) |5 ~. }   Lee.GetHeight();
   cout<<endl;
/ @9 P( {  Z; K, O+ Z   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
- w# v( ]. {5 R4 I6 G   cout<<endl;
}
推荐第二种写法
' m& H3 o& G/ J" Y8 m+ O5 \