25.类，对象，成员实例

(@_@)

第一种写法：
#include <iostream>
" A# x# q1 D) p5 [using namespace std;
6 z% o& v  u( r* V8 v/ d! Z5 s6 |class Human
  A2 N5 }  s5 [7 t+ u5 y; _{
9 _1 C0 h/ ?' _# s' Q/ ppublic:
1 Z" k, }  ?! J* ?$ L4 @- w void GetHeight(){cout<<Height;}
, L! v# v. {% V4 H. Z6 x+ E void GetWeight(){cout<<Weight;}
* M5 D- {2 Q! W void SetHeight(int x){Height=x;}
* p5 I" l, h" C$ W2 e3 ?4 A7 y! L void SetWeight(int y){Weight=y;}
* ]" l  q% F- a5 |# i  Tprivate:
int Height;
int Weight;
6 @) h+ d4 v' |5 d};
1 v! K8 i0 e' l( ~" j6 r
9 F1 g1 \7 ~; X$ d& w% ]% o9 xvoid main(void)
{
   Human Lee;
$ M, E$ q+ h/ J2 `   Lee.SetHeight(172);
# s, N/ ?# r3 D9 P% r  T" I' o   cout<<"Lee的身高是：";
' M. v/ N( f5 W7 m   Lee.GetHeight();
# d, t9 W( {0 W8 g7 B. W( W   cout<<endl;
   Lee.SetWeight(120);
   cout<<"Lee的体重是：";
   Lee.GetWeight();
3 I' w6 }. I, [  O. i, Y' t5 s4 D   cout<<endl;
}
第二种写法：
9 i6 e9 ~7 G/ y  o& m#include <iostream>
using namespace std;
class Human
: Z0 K1 H2 W6 ?  A  i4 S3 X" e. b{
public:
, n; A! o# Z' G- Y8 F void GetHeight();
    void GetWeight();
! J. F' D4 l2 Q& g/ N- H; x void SetHeight(int x);
' p& N9 N. p6 i1 T4 }7 t void SetWeight(int y);
" d' r/ z% s% G' Mprivate:
3 B0 D) }; }; j int Height;
int Weight;
};
' g, a  P) {# B6 E7 Ovoid Human::SetHeight(int x)
% G& u, w5 v  J5 R' q{
Height=x;
}
, x6 d# A# b5 Y1 K* T1 fvoid Human::GetHeight()
{
cout<<Height;
. ^$ B  J! p3 ]: g" {8 u5 F% f}
void Human::SetWeight(int y)
{
; c7 ~# c; A# E2 s. g Weight=y;
}
( d$ H: a. w  q, Lvoid Human::GetWeight()
3 \2 i% X" G( R7 }1 o{
cout<<Weight;
1 i; T  V# l$ @1 y- }}
* U: l' B+ N6 Y9 O& i! R; ^void main(void)
{
   Human Lee;
8 a9 P  O' p8 P) l   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
   cout<<endl;
1 l& V$ A- @1 y4 h6 U; J   Lee.SetWeight(120);
) e6 ], e3 C4 c) i' i/ V   cout<<"Lee的体重是：";
. Z4 T; j( E' p$ A) |* B   Lee.GetWeight();
   cout<<endl;
}
推荐第二种写法