25.类，对象，成员实例

(@_@)

第一种写法：
; Q  n! L% `. ^#include <iostream>
% u7 t% Q' [! Xusing namespace std;
$ O9 T! s% {  u+ S( C! K2 u- zclass Human
3 z  b* M+ a1 J{
7 z; D6 s* }& p" p1 e" X: jpublic:
7 B5 L' A4 t2 h& e+ P void GetHeight(){cout<<Height;}
void GetWeight(){cout<<Weight;}
  I' I2 b: L: {: s. [ void SetHeight(int x){Height=x;}
3 ]$ b& J  p8 u void SetWeight(int y){Weight=y;}
" e3 v$ ^' }8 m$ ?private:
9 J+ I4 U, E. O) d  ~ int Height;
int Weight;
& \9 |8 f( x% N};

4 ]) \4 C3 N9 P' Z- E* svoid main(void)
{
   Human Lee;
   Lee.SetHeight(172);
. M# ?, f" Y- K* W) {# \- L: Z   cout<<"Lee的身高是：";
% S. d7 P" Z3 M: N( E   Lee.GetHeight();
   cout<<endl;
   Lee.SetWeight(120);
0 @: y3 n4 N( j; y   cout<<"Lee的体重是：";
1 u% m- y1 I7 o5 C0 Z! W   Lee.GetWeight();
   cout<<endl;
- n# z: B- P+ }* C; L5 A/ X. o6 h}
" k: s8 g" z3 U3 G" [0 b( v第二种写法：
) Q. Z+ F/ w* g* d) E# q+ K7 A#include <iostream>
using namespace std;
( z2 L' C) a  R" Y# Z6 w+ n6 O* uclass Human
{
public:
void GetHeight();
    void GetWeight();
void SetHeight(int x);
" Z4 Q: i! V3 N: E* W, J8 P5 O& \ void SetWeight(int y);
. w4 `: ?" r: X6 O6 Q- F, xprivate:
int Height;
) s0 A& S! Z' J int Weight;
( t) o. K; T% \/ l! V( r};
void Human::SetHeight(int x)
{
9 V5 s# L+ x. s5 P* x$ E3 ?7 f( {' } Height=x;
}
void Human::GetHeight()
{
: @9 b# ]  p1 S cout<<Height;
5 C" m2 c5 X0 a" g7 @}
void Human::SetWeight(int y)
! f, [  v1 W+ |. F3 v% u{
: n, u4 [. j/ U5 n5 H) [ Weight=y;
! n# u: _: M$ k2 }: h}
6 ^" N& S2 ~& [% F3 hvoid Human::GetWeight()
+ h; [: @5 E9 S: E{
cout<<Weight;
}
void main(void)
{
   Human Lee;
! H$ m+ g5 R* P, c   Lee.SetHeight(172);
   cout<<"Lee的身高是：";
   Lee.GetHeight();
) e  `# @5 }8 j( S   cout<<endl;
2 Z2 z0 h2 J8 \1 N   Lee.SetWeight(120);
1 }+ g2 W' X: O6 j/ [   cout<<"Lee的体重是：";
( o. ~4 q, V; A5 D1 q   Lee.GetWeight();
   cout<<endl;
}
推荐第二种写法
$ [/ J( m2 p6 @6 `" d
  Y. Q( }6 h; D; e6 y