25.类，对象，成员实例

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第一种写法：
#include <iostream>
1 N( E! k+ Q6 G% f& t' uusing namespace std;
" r. F6 N" a4 ?- iclass Human
% n! ?, i0 C4 {{
public:
void GetHeight(){cout<<Height;}
. j1 d1 }: F4 c void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
private:
int Height;
, V1 }+ ]& B& ?! z( ^" m+ P' _ int Weight;
};

void main(void)
+ ?+ j3 i/ L7 t$ j{
4 }, B" M' i2 Z' ~1 P1 W: Q   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
0 d% z7 e2 `$ q- E+ {, k   cout<<endl;
1 c7 h6 ~& m% |   Lee.SetWeight(120);
+ C$ v6 ]+ B( k" z, M( C- N4 [   cout<<"Lee的体重是：";
   Lee.GetWeight();
0 J- K5 \/ d  Q  \8 i0 R3 T* P   cout<<endl;
/ B& @, l: q3 i+ l. {}
' z" Z& R  l  u9 f+ O. ^/ ^' x5 c第二种写法：
#include <iostream>
. f% _! m: P( [6 s1 O- s- F+ k' Ousing namespace std;
; X. F5 R, \5 T/ I" `7 b! K% `3 }class Human
  p+ W: l) I- {6 v" x  k. T{
public:
9 h, b9 K" r3 l  e5 q void GetHeight();
    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
+ w* K, s" d' B$ iprivate:
7 h9 e; u. r& s4 i) ^( ~& y int Height;
. a6 r8 D) }, B" L- u int Weight;
/ ]9 v* q8 j! E; P% z$ G, {};
3 h. e4 g) @$ M% Qvoid Human::SetHeight(int x)
7 m2 H; F- Q1 y6 T* Z{
Height=x;
- [' b4 _! S2 G" }3 k) i2 e4 i}
3 X: w! ~# f0 D; O4 {) avoid Human::GetHeight()
{
7 w" ~  K! V# ] cout<<Height;
& p9 b# H- l: o; @! Y}
9 Y6 s; h, F/ i3 a' a  xvoid Human::SetWeight(int y)
{
" X: `! s2 K2 K  S( Z5 P. h Weight=y;
* H" q  k6 i6 J' s: y- b}
" l& j% W( X; T4 J/ M+ wvoid Human::GetWeight()
{
2 u# w9 \' O' Y# N" L% s2 H8 n4 v) A cout<<Weight;
7 S2 e( z9 H8 s& H# N1 j}
7 H7 d! H# ^; D1 A6 h/ C( Nvoid main(void)
{
6 U" N4 P' G; I2 }8 `   Human Lee;
   Lee.SetHeight(172);
5 W# y  @: C& Q, \   cout<<"Lee的身高是：";
, O9 g) G7 y8 h# z0 [: ~$ x) J   Lee.GetHeight();
6 b  ~4 A$ w+ o% V1 f; H  P* `& X   cout<<endl;
   Lee.SetWeight(120);
1 C& K) e) f4 e   cout<<"Lee的体重是：";
   Lee.GetWeight();
% p6 r! I! T5 k! \8 D  G+ w   cout<<endl;
$ a! L) @( p4 ]! z. |}
推荐第二种写法