25.类，对象，成员实例

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第一种写法：
#include <iostream>
using namespace std;
. g, \1 B$ H4 }class Human
5 g* s, L, F+ o% a4 i9 J{
# T9 O0 k/ }: k4 V9 }public:
void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
' p% D  u) R* { void SetHeight(int x){Height=x;}
void SetWeight(int y){Weight=y;}
& ^! y  u6 m0 C/ eprivate:
int Height;
int Weight;
};
6 X9 m/ }! I" d
void main(void)
& N7 L/ Z5 O2 ]1 y* u0 [{
8 k! C  t# E3 V; s8 v1 R3 q0 s' L. G   Human Lee;
   Lee.SetHeight(172);
& J0 s5 S  e' a1 H! z2 u1 R   cout<<"Lee的身高是：";
   Lee.GetHeight();
' t: C7 t' f# N0 U6 Z   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
9 T& `/ E" V4 h+ V: c6 K7 m; s   Lee.GetWeight();
8 p$ c: @3 \+ A   cout<<endl;
}
第二种写法：
  Y3 }' D$ z& U- {#include <iostream>
using namespace std;
class Human
{
8 T7 E- W3 R% v/ s, Q, Zpublic:
void GetHeight();
    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
; a' [" `% j5 Q' s% N! ~private:
int Height;
int Weight;
};
void Human::SetHeight(int x)
{
+ X: F- t! m) e  N; ]- | Height=x;
( S- h1 I8 A5 H9 t- d! h}
void Human::GetHeight()
. i& U% F' v" o0 p0 R# M{
cout<<Height;
}
) @( ?1 ]$ |. W' Wvoid Human::SetWeight(int y)
{
Weight=y;
}
void Human::GetWeight()
8 f7 C3 F8 s3 }' H7 N7 M  z. U{
/ m. i5 @6 E! Q1 _+ @ cout<<Weight;
" q- u0 J9 O4 M) `* y" b4 |0 Y( P# j}
! J) \$ O, a" h& ^% P) O4 Y. b( ?void main(void)
: \; V" C3 T2 a; R! n' l/ m+ t& O7 Q{
   Human Lee;
   Lee.SetHeight(172);
8 S- z9 @& l- x   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
   cout<<endl;
) Y7 q% N* v& k+ P  O8 @0 c6 r5 Y}
推荐第二种写法


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