25.类，对象，成员实例

(@_@)

第一种写法：
#include <iostream>
using namespace std;
class Human
+ s. d0 U2 [! S; O$ r{
4 V- j8 n* G" K6 cpublic:
void GetHeight(){cout<<Height;}
* A0 q' m' t, g* w: p- u void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
0 N7 n% f" ?1 b$ j. @% M void SetWeight(int y){Weight=y;}
2 S/ `2 }( V' N9 l6 Jprivate:
  U9 Z: o; V4 _1 E, I) I int Height;
7 O7 {5 t. c/ k/ s$ O5 J4 R: G' C int Weight;
( ]& ?) c9 X+ [6 t2 G};

void main(void)
{
   Human Lee;
. R0 a% Z3 ^$ |0 R  F0 S0 A   Lee.SetHeight(172);
9 Q5 F, }* H$ V/ f( s: ^, T   cout<<"Lee的身高是：";
# h, D" q; t1 |! Q) l5 M" d   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
! ^# N. T/ E) J. C6 d   cout<<"Lee的体重是：";
   Lee.GetWeight();
8 `2 T" Q# n* X" H   cout<<endl;
}
第二种写法：
#include <iostream>
, s' D1 b7 q& a/ Z/ }! j9 Wusing namespace std;
7 W: u$ `. E0 _# lclass Human
" q( P% M! ^& @1 l% M0 {- L{
* r8 A1 v5 V6 K+ p, L" R# Ppublic:
void GetHeight();
    void GetWeight();
4 \( T! |/ Q; \5 a, i. ` void SetHeight(int x);
void SetWeight(int y);
private:
$ O$ S9 K9 h6 i+ x/ F int Height;
: [0 r: C7 T+ o$ J int Weight;
};
void Human::SetHeight(int x)
7 r- F2 e' M+ g8 k2 a" l' [) R{
Height=x;
$ ^/ h$ R6 n: E' d: R}
% O5 H1 V1 g* l9 i' Vvoid Human::GetHeight()
{
cout<<Height;
2 s& k% H7 Y  @0 {7 M7 q}
- c( Q  [( |5 o; b8 A# m7 Kvoid Human::SetWeight(int y)
{
Weight=y;
5 y1 Q% x' n8 v# X}
void Human::GetWeight()
{
, w5 c3 K/ ]! h& V cout<<Weight;
& k8 E, r- u3 k/ B8 u7 V  }7 @}
; b5 l- A: S3 l# h& Avoid main(void)
. I! L5 I6 E' Y2 B% J: ^{
' m2 t* N) \+ L3 Q9 H   Human Lee;
/ l8 _# c4 z+ @1 E3 U& i   Lee.SetHeight(172);
2 J+ t  Q, T8 J1 {7 p6 f3 j   cout<<"Lee的身高是：";
   Lee.GetHeight();
$ r% }6 y/ t! h0 x& F! B. Q   cout<<endl;
   Lee.SetWeight(120);
2 H% S' M7 ]" w+ L8 J& I   cout<<"Lee的体重是：";
   Lee.GetWeight();
/ E6 o  H; g& V$ O* G0 |9 ~   cout<<endl;
}
推荐第二种写法
% q$ G' Q- C  @( O$ C0 k* G

7 u1 ~7 t/ i, r9 I% u6 G0 C- g