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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:
! Y+ r) |) y: G* N- N#include <iostream>
, S2 o/ d- C+ p- E& Y" U6 susing namespace std;3 j- Z9 n- O" H/ o( V$ J
class Human
) b* `( Z+ Z2 F1 i0 J/ H! w1 \. X{
! Z  Y! i$ U' C" kpublic:
/ |1 J- a$ E' o7 Q% _( } void GetHeight(){cout<<Height;}( S' o- F4 t7 ]# \4 |
void GetWeight(){cout<<Weight;}3 C. H, R  h/ O" j, J# c2 f7 f, f
void SetHeight(int x){Height=x;}
7 y3 y$ {5 m$ n/ ^8 h$ m void SetWeight(int y){Weight=y;}
3 }' e  {. m, t7 f% T0 Y) f5 F+ eprivate:
( ~8 _# V+ v/ d0 X int Height;2 P/ ^* r9 v9 h3 Y2 p; ^# c( ~/ q3 F
int Weight;
( u6 i4 D, |9 u. {: }, N5 |};
$ w% V" A  L2 y5 o) Y6 C" o0 Z. {5 a( \$ t# p& o
void main(void)
8 O1 Q# y' G1 p5 I{
* k# W9 N& q2 P0 A* q2 o5 t; v) K   Human Lee;
' F1 W$ l0 f3 Z; g% G7 S   Lee.SetHeight(172);
, [9 X' w2 z* _: u& b# [3 g' @   cout<<"Lee的身高是:";
3 K% o& ?& m! w8 R/ M0 o! ~4 \% p0 D   Lee.GetHeight();8 a  T. T5 h0 S; u" j' U, p
   cout<<endl;* r8 V) s" z0 D2 W4 Q+ g
   Lee.SetWeight(120);
5 H% `( l6 w1 C* @) O4 i; r   cout<<"Lee的体重是:";
) C2 }9 m' G5 [' r6 Z   Lee.GetWeight();2 t% o( w7 f) T( ~
   cout<<endl;
7 P* r1 I. d/ ^! x0 u$ F: n/ [}
6 V2 ?6 U( Z2 L" l1 @1 e9 y9 w第二种写法:, r+ d- {6 O0 D
#include <iostream>
& I) m3 d4 m/ o& f0 p9 Husing namespace std;1 i+ w6 z# _2 y' F- q# V  G7 L2 K
class Human  p& p- C: |! [: K6 @9 V
{
* u3 v# J! A# n- [5 v9 R/ npublic:
1 [: M2 R2 X  X  d; E void GetHeight();
$ c6 S2 h' [; I# e- _    void GetWeight();4 {  A0 G* M( T& @
void SetHeight(int x);: `  N* L0 `( _* D
void SetWeight(int y);+ v/ K- }+ V6 w& o9 ]
private:
1 l( p* I- Q7 ^# M  S* |/ \" e int Height;! Z6 H2 N% C  a. |+ `9 c/ j8 w9 V
int Weight;
/ a; E! P$ \: w};
7 o; w5 |7 G7 C+ Q/ v! o# G& xvoid Human::SetHeight(int x)
6 C3 E5 o* c8 v' \{
; R& p* d1 X" y0 Z0 d( H Height=x;
6 `5 H  X, _6 q}
* N7 a- [1 g4 N" W* d8 zvoid Human::GetHeight()
* i6 H. ]! g4 j6 j! X{
- a8 h, G9 Z; {% y cout<<Height;* r) a1 U' I" j1 P+ n
}' L2 \, i, B+ @1 }6 ~3 P
void Human::SetWeight(int y)2 o. }+ P7 |% F  O+ k
{
3 v8 c/ K* o7 U1 G/ M Weight=y;4 @8 L+ {6 y8 |5 F
}; R# {: U" t7 ~9 I
void Human::GetWeight()# {, {5 @& m1 q
{" L" N7 q* K5 z2 p. o' ]5 l
cout<<Weight;
; Y0 A' A, h% M3 Y3 ?/ ?$ R, s3 g}
3 ?) x. n% m- Q/ _. c9 F% A1 Avoid main(void)
& [8 k6 Q8 H$ R! B: C{" z! @1 ?3 ]& t4 v/ D# K
   Human Lee;. p. k' J) a. z+ r
   Lee.SetHeight(172);
$ |9 L- P9 V, e0 s* ?   cout<<"Lee的身高是:";
( ~% w* {7 ^, _  k! t5 y   Lee.GetHeight();. A& S1 H3 D" ~0 c$ N8 i
   cout<<endl;
" j' c$ A1 `5 B6 w   Lee.SetWeight(120);) t9 j  c& u& G. x
   cout<<"Lee的体重是:";4 y5 Z# ~& X: M2 q& |/ b
   Lee.GetWeight();& `: G4 Y0 M% c! R/ f
   cout<<endl;
. d0 y7 w6 e, @6 w7 B# t& G}# y8 G) D, _# d/ q
推荐第二种写法# M- ^8 b  Q1 ~6 d. S0 D; Z
/ @- b7 {1 I7 H: K
$ m8 Z$ i7 I- Y+ g+ p# D
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