25.类，对象，成员实例

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第一种写法：
/ e2 Z( L% t" U/ W! C+ _#include <iostream>
5 ^3 |3 A) ?; }! ?/ susing namespace std;
3 @, ^: ?0 ~, k) W: w/ E- M  T) Lclass Human
* p! T% Z4 H* [' o" B5 j{
public:
9 a. `) K( f1 D5 @& N, k+ z void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
% L; i5 c- v4 \7 C( } void SetWeight(int y){Weight=y;}
private:
+ f7 v# [* c+ q$ D& o int Height;
% J7 ?- w" t) d int Weight;
1 m' z4 n/ T( M( w; ]: W: ^) n};

& H; R" s6 I, j9 e( z" Qvoid main(void)
{
) l: W& P' u4 ~) w& {' c   Human Lee;
   Lee.SetHeight(172);
) q: ]% [$ D7 ^" H2 C+ r: ?   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
' m& M+ g9 C1 j2 A% d   Lee.SetWeight(120);
1 D4 s: D/ _7 k5 p3 n4 U   cout<<"Lee的体重是：";
* h; h! [: K! [% H# Q9 u4 `   Lee.GetWeight();
   cout<<endl;
}
- P7 ~1 w8 k, S2 k) w第二种写法：
" d& E% }" g2 X) x#include <iostream>
using namespace std;
8 a1 `) A8 [3 R. c% }( T& Z/ gclass Human
{
public:
void GetHeight();
6 z- F+ B- z) P1 X, W    void GetWeight();
$ e4 q4 T5 [# P void SetHeight(int x);
void SetWeight(int y);
9 @9 K0 h( x4 o: V2 _/ [" [2 F- Mprivate:
6 z9 z4 c0 `: e int Height;
2 l7 J# d( o" N' b4 y# C int Weight;
};
void Human::SetHeight(int x)
{
Height=x;
) p" g: T; S7 v+ X! G2 f}
# o, ]% W# d3 P" B# n8 F% K6 W; ]+ Ivoid Human::GetHeight()
8 g7 n3 L# R! D" Y/ v{
- t8 _5 I# u! {+ Q/ X2 c8 Q3 ] cout<<Height;
# [$ A" y, B8 Y) \$ v1 [: J}
void Human::SetWeight(int y)
{
. q" h# ?  A& S$ s# Q+ p$ q: \ Weight=y;
}
+ G* M3 n2 g! {  zvoid Human::GetWeight()
' z6 `$ Q  q* n/ t' J) l$ w{
% o8 C( z2 a" X* X cout<<Weight;
' [3 G+ N9 t3 F. F9 G}
void main(void)
{
8 C- k; u! ]' x6 \   Human Lee;
   Lee.SetHeight(172);
0 }8 E, V/ j2 V) `   cout<<"Lee的身高是：";
8 w8 E' `! S7 x7 O   Lee.GetHeight();
6 t& N  D, H. d+ D   cout<<endl;
9 M1 I8 ?) a8 _6 F6 ~# }   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
! H$ {% e; \# r$ B$ L) B5 F5 Z  u: `+ o   Lee.GetWeight();
   cout<<endl;
+ e' C7 w( v) c# z}
7 E2 K* ?& ^+ f$ A9 s1 V# h) o9 B& o- l推荐第二种写法


4 [- Q) G/ H) o- [, \9 g# c