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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:
. c5 x) n. V2 w#include <iostream>) I/ X, z- d& w/ z* D
using namespace std;# a  z: T" g  Y9 ^' b
class Human9 v2 M  F4 w  k# j3 Q6 E
{
& T7 D% X; ]% r( v! a0 [# Xpublic:1 u0 n3 S( c% `  i1 X* d2 J; g% ]2 J
void GetHeight(){cout<<Height;}
6 O5 I( B& `# h7 H void GetWeight(){cout<<Weight;}4 L& O, ?/ h6 y8 }" h# n
void SetHeight(int x){Height=x;}. s1 K5 Q2 j1 Y3 A. @& d
void SetWeight(int y){Weight=y;}, W. I; ~% h2 v& c& u+ L
private:
6 D, }# L2 [- W+ H0 Z5 I# ` int Height;" W/ h& A  q5 d+ T, h
int Weight;
4 P+ V( B/ W  C8 ?};) k$ _9 o: Q5 \1 Y1 `
% |  B+ q+ Q0 S% x1 H
void main(void). |9 ~; X& f/ M5 k3 a$ z0 K
{0 t/ r: X- G8 Q2 b! f3 g5 Y
   Human Lee;
$ E" U$ Y7 p! L, G, Z) l, `- l+ ]   Lee.SetHeight(172);1 Y# @" k( k: ]! C: a
   cout<<"Lee的身高是:";
% Z  W" F7 W6 Y6 u7 P% J   Lee.GetHeight();6 C6 E6 l) m! _& K. x* x/ U
   cout<<endl;$ ^) L+ `3 I/ `* E
   Lee.SetWeight(120);1 @" s; ]. |0 Y: |5 \
   cout<<"Lee的体重是:";- K  K" M) Q/ R0 ]
   Lee.GetWeight();7 U. r4 e" d0 I( }" d
   cout<<endl;$ D, x0 ]: t, D; Z& k# G
}7 k0 ?- s0 o% O- e
第二种写法:9 ^  E1 y/ s. l3 y$ |
#include <iostream>
/ M* |/ c9 x' T: B( E8 yusing namespace std;
& g3 H0 c. m; X0 o6 A8 ]class Human
/ X: m: _/ d6 E+ }9 c{0 [% T: K# y: u! L! R
public:
# Q  L! m8 ~( w! J+ |$ Z void GetHeight();
/ O! h9 J, |: c! L4 p- u2 ~) v& r    void GetWeight();
5 u' n/ L2 V9 o$ S void SetHeight(int x);5 U' T: I7 q" d8 Z4 I
void SetWeight(int y);' W5 ^) j5 {$ ~' R9 w( p, E+ I5 W
private:
3 {! ^% ^3 |2 i7 b- V int Height;
/ a0 z* M. N; {3 J" N int Weight;
( J( L; N% P2 w' m; G+ Y% ?  U$ h/ ]};
' W1 ?3 a8 K* qvoid Human::SetHeight(int x)
7 m( o9 N+ {1 A$ I3 ^{
" K7 {: r  U& o- t* u! I Height=x;
( ?: j0 E) Z3 ~, \}
$ S* X" i( K  Q% n4 ?. I  {' svoid Human::GetHeight()
1 W* I8 }* k, c% R# T1 H: D. b  K2 i{
. k' M; \$ {# _! c$ s cout<<Height;
/ |% [* D6 U7 K# Y) [}
- R. k+ j* f1 M! q8 ?; Pvoid Human::SetWeight(int y)
- m+ t- f5 S/ p2 g# m{
# M  K" v3 D# s$ s Weight=y;
' d1 x1 M5 }2 Y+ x! K- [}6 W  s# ?& G3 A7 X/ O
void Human::GetWeight()6 f! }! q( ^- C+ d4 P% F
{* B& b" _: Y' Y+ G) x
cout<<Weight;
7 v3 V: V& N2 {0 T- K+ M}
# n7 N$ V- _7 C- d: mvoid main(void)6 J5 M0 s* J1 V4 n3 Y( Y
{
9 E% n$ s! c3 ~4 u   Human Lee;
: a' ?+ X' G) F% L" Z   Lee.SetHeight(172);
$ N) o$ M' q1 W   cout<<"Lee的身高是:";: R% w! b) V( W2 X
   Lee.GetHeight();6 N2 S( E/ ~* K
   cout<<endl;% [; k1 M3 J. A6 ]5 Q7 [1 D- H. t
   Lee.SetWeight(120);
+ N2 q; y2 ]/ a6 I5 ?% u) s6 M" ?   cout<<"Lee的体重是:";$ b4 d3 h/ z" g1 v, H9 u
   Lee.GetWeight();% K& T5 f* [% A- ?; u% J  t
   cout<<endl;9 G6 X- `$ u0 l0 I& m
}
) m1 k4 n- \3 I; D推荐第二种写法6 [/ H# [* V* L& ?3 D( Y7 c

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