25.类，对象，成员实例

(@_@)

第一种写法：
#include <iostream>
& F6 b& W3 p) [7 v) s& \$ K, G8 T% nusing namespace std;
class Human
{
public:
/ A1 v. W: @) T. t6 h void GetHeight(){cout<<Height;}
, `) G9 T: {% C' K$ w2 G6 P void GetWeight(){cout<<Weight;}
- V2 y% R4 s7 o void SetHeight(int x){Height=x;}
. ]" H( E# R; ]; L/ ` void SetWeight(int y){Weight=y;}
private:
5 {& y( j$ I4 N' z3 K- W int Height;
int Weight;
};

void main(void)
{
" a' K3 L: T- [   Human Lee;
   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
/ W8 m  |4 G  a: |   Lee.SetWeight(120);
# \3 C/ L; H- P! e/ N0 v   cout<<"Lee的体重是：";
   Lee.GetWeight();
9 D: R1 X1 u: B% c2 l. C   cout<<endl;
, W2 s0 w- |/ P, G  n0 d3 n+ V}
5 C- z$ z" Y  N第二种写法：
3 p3 W- B; V8 {; H9 V9 W4 [#include <iostream>
using namespace std;
  W; A! _4 ]1 d6 a7 U: ]8 bclass Human
5 @% c8 h! W+ u. g9 |1 \{
public:
3 S- B* g# P# z$ N* T void GetHeight();
" d5 A0 B2 z% I) Z2 u" E/ I    void GetWeight();
void SetHeight(int x);
void SetWeight(int y);
private:
int Height;
int Weight;
8 S; V) [* a' b8 y& ~};
void Human::SetHeight(int x)
  z  M7 |/ Z7 X+ k1 M: D( j3 [$ V{
6 C( Q! r! ]5 _/ `- y* | Height=x;
% K. C0 }! \: x  g}
void Human::GetHeight()
; {. \  g' |; L& f5 z{
: H5 A' L+ B. P' a" c1 K cout<<Height;
: z8 a1 y  p2 H}
' V! G2 `3 |8 H( G* v; yvoid Human::SetWeight(int y)
{
Weight=y;
1 @+ ?" ^% J9 m/ R) e' F) n5 b, B}
  h4 T# w4 ]/ I! N% {+ o) O/ Zvoid Human::GetWeight()
{
cout<<Weight;
- A7 [9 H) C7 T* ?. r& d! U. c}
void main(void)
{
   Human Lee;
. ?! R. }4 g3 g! q1 J4 w   Lee.SetHeight(172);
1 ]3 l+ q# l1 v   cout<<"Lee的身高是：";
! B4 n7 \( |9 h) S. O   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
: S6 g( K2 w- I   cout<<endl;
}
8 g- f8 H" B, a- p& p7 |推荐第二种写法
4 O! P2 n) T, Q4 a2 m4 Y7 r

. r1 ^# {8 r% r8 o: H# }