25.类，对象，成员实例

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第一种写法：
1 n& ]3 P! D( Q8 Y5 ]9 }#include <iostream>
2 m' o& r( \+ P" X7 i( m& Fusing namespace std;
0 K4 a% y& E7 i5 z/ b# Z3 Rclass Human
! X: J+ M2 H0 r  Z{
public:
void GetHeight(){cout<<Height;}
& @; t" u/ e6 f$ A+ w. V void GetWeight(){cout<<Weight;}
void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
private:
int Height;
int Weight;
7 Y8 Q3 r* R% T- u# T};
+ I+ Y# W6 Z6 c) N+ w1 w5 d# f
void main(void)
{
   Human Lee;
5 d# O  \: P: e9 |1 ?   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
, A& |% h! l. k% ]. i   Lee.GetHeight();
   cout<<endl;
. r3 _+ b) S+ ]( `+ Z6 |   Lee.SetWeight(120);
9 q. x# ]. B# C8 B/ f   cout<<"Lee的体重是：";
   Lee.GetWeight();
- b  t8 I6 n- N2 \/ V   cout<<endl;
}
第二种写法：
- z2 c1 s8 [) B( o/ C# @" D3 [#include <iostream>
! R5 i4 e! o, t! L- I  Yusing namespace std;
& F0 s3 o7 _1 t% Q) l& h7 ]class Human
{
0 ?" }; X- A" R/ ]8 m: s/ N; ]public:
void GetHeight();
    void GetWeight();
- `# O  i  ~; p; s% T# ? void SetHeight(int x);
/ i3 B3 m$ p% L2 _& o$ Z void SetWeight(int y);
private:
int Height;
; v$ H( W% D7 \& j. i int Weight;
};
) d; w" ^6 Q, `. I% O) {2 Ivoid Human::SetHeight(int x)
{
Height=x;
}
void Human::GetHeight()
; b) f9 E* i$ r9 ?/ G1 Z6 }{
& h) p2 C3 B: Q+ h cout<<Height;
}
void Human::SetWeight(int y)
' C0 ~& ]- N$ ?7 }5 l' O{
Weight=y;
/ X* W8 |2 e" J, Y; m}
void Human::GetWeight()
{
: \. H- Z. Y  O' h cout<<Weight;
}
# q) w. f  j  }. Zvoid main(void)
{
   Human Lee;
& K. |4 \5 }3 [7 y2 P% b   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
% j3 u& q2 _2 A7 _   cout<<endl;
; U$ ^6 j$ L( m  l9 D8 _# D   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
9 k0 Q! b1 W5 e3 W+ C1 q   Lee.GetWeight();
   cout<<endl;
7 E- i  I7 I+ F6 R2 Z+ i}
推荐第二种写法