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25.类,对象,成员实例

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发表于 2013-3-9 00:28:28 | 显示全部楼层 |阅读模式

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第一种写法:
1 t- J4 E  W0 b$ w; ^#include <iostream>7 ?2 i& ]) F, T; B: T( ]% O
using namespace std;6 |  ~2 p* z7 F
class Human. K8 w6 T3 c5 q. |
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public:0 V" v+ {! l: L- y
void GetHeight(){cout<<Height;}) P5 D& [, @: V* i: r
void GetWeight(){cout<<Weight;}
* ?( t- d, o1 [8 {4 i void SetHeight(int x){Height=x;}
* W- J, U& |* E) b1 W void SetWeight(int y){Weight=y;}. h) x- F) n* m% a
private:$ I, b8 Z8 Z' t6 V! F  Z
int Height;1 g( e4 x$ c" f+ W/ o. D% w
int Weight;
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5 L# r. i' d! t& K( avoid main(void)7 r! U) n+ ^% b/ m) v- F/ _8 F
{
7 d7 T9 I+ N5 q/ I$ i+ g   Human Lee;$ ^5 q3 J8 a! Z+ U* T  l& g
   Lee.SetHeight(172);1 N3 {& f0 e7 L) S
   cout<<"Lee的身高是:";
3 v; G) ?0 o& |" h   Lee.GetHeight();
6 U# g; c9 E0 Q2 {  y1 ]% T   cout<<endl;  ^+ Q9 l9 C! L& R# n" S
   Lee.SetWeight(120);: I; Z# F9 D- w
   cout<<"Lee的体重是:";
3 j& Y; ~$ d7 g+ n$ l( z   Lee.GetWeight();
) v! n% h1 y6 g' G   cout<<endl;
8 i: k1 [, y& Z8 C$ z4 M}
) j' Q$ H8 `% Y2 m6 K/ ^9 t第二种写法:6 P) D2 g( w0 H* w( T, \* X3 N: x
#include <iostream>
3 z( o8 s% r$ p5 S  R4 n& Z9 }using namespace std;
6 z; e. m2 |; [5 b2 O1 I6 N+ B" ^class Human
4 d; h' R+ c- P& o{
* B; I$ o; |' ipublic:
- C3 E5 _1 h. l- \) H void GetHeight();
/ y* P2 E$ E* @: P) A/ X    void GetWeight();2 _, j1 x3 s/ r3 D: x% m! T9 r
void SetHeight(int x);& i* D0 |- X1 P; q6 d# l
void SetWeight(int y);
% K+ i: R4 L9 _, v: P+ |: @private:5 \' |+ ^% B0 @8 d" t' b
int Height;
) D9 R# a2 w! K* B* B# S int Weight;
! y& Q+ O# v$ W2 p6 e};6 b* p- ~5 F0 C- X( [
void Human::SetHeight(int x)
( p, n4 ], v& d4 {, V; M- t4 c{
6 e* I+ j2 f4 T) C3 `. A8 }$ _ Height=x;) F4 j$ l2 t, ?" K
}
9 @5 x" h% i2 g. E6 Pvoid Human::GetHeight()
; c) v' Y! M1 u{
- u) M6 W( }( }" |' \ cout<<Height;
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void Human::SetWeight(int y)! F2 K7 o2 g1 S- \1 y% T- Z
{
5 Z# V" u+ _0 C4 S$ L* o3 ^ Weight=y;
6 U/ s3 \7 `. R& F4 {1 R}' Z" N$ J% ~# A; O# D  X
void Human::GetWeight()  M3 C3 U  d$ M  h3 \
{( M$ ]8 c0 H2 S9 r4 d9 u0 q# u
cout<<Weight;
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void main(void)
0 s: R' m7 h+ _* \8 M0 \4 {" e$ s{9 B: U3 e& p  g: I2 B" [3 S
   Human Lee;
% j# {& A5 I; W. d   Lee.SetHeight(172);, L. F; n" r/ `/ ?. k8 Q, I1 W' \
   cout<<"Lee的身高是:";
9 T; V. l3 c" Y: @$ W' v   Lee.GetHeight();
) ]* J8 S- F. Q% V   cout<<endl;
1 T! }% @6 E$ d8 c0 ]/ E2 B   Lee.SetWeight(120);5 f3 a4 H/ V7 N# k& q9 N
   cout<<"Lee的体重是:";: `& o( y& z8 I1 K5 Y* y
   Lee.GetWeight();
4 i. i# @' l2 s2 {8 @% L. B   cout<<endl;
! I( p' T* E! B* J8 }' z}# w4 I7 m5 }' L7 `/ g
推荐第二种写法) r0 p- ]: r2 E0 D, Q0 \! R

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