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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 ]" Y  e; T  w6 h9 @4 ^% C
#include <iostream>
# d" w: i+ X# Y8 A3 A5 }) Tusing namespace std;
4 l0 B& {% U  A- E5 @" N' ^class Human
  @) L+ M3 X7 I! y+ b7 z{
1 {) E. m$ V9 L: H6 x, a5 dpublic:0 i  u/ R: c" G# L3 o
void GetHeight(){cout<<Height;}: B; d7 F) a7 x4 T4 U
void GetWeight(){cout<<Weight;}
- w$ [" U9 u4 ?" e, v3 t' o' f void SetHeight(int x){Height=x;}, h$ n5 v5 ^' k2 T* c, `
void SetWeight(int y){Weight=y;}
4 M1 v* m; l7 `6 f" H+ Eprivate:6 [. P& Q( k* L7 E( j/ N
int Height;
+ U3 J. [2 k0 ^1 B/ b int Weight;
  v, N# H, @8 p! K8 ]};6 }: y9 Q) Q$ b1 Q% Y

. ]* _0 M  {& K. ^+ P5 cvoid main(void)
% q$ i0 l! t. v- _) d. U# z- p, r{: M+ I) z/ z& R. S+ j0 [
   Human Lee;
4 k, e+ r6 |" \7 h3 m- h   Lee.SetHeight(172);2 }: W+ n" {  {5 k* v+ d! E
   cout<<"Lee的身高是:";
0 P6 T: [3 O# ]- z6 I   Lee.GetHeight();
" g, z# r4 X7 u   cout<<endl;
& ~( Z# x; J2 I6 s6 g2 }- C   Lee.SetWeight(120);* l  j/ a% h* E6 n3 ~5 R7 x" _
   cout<<"Lee的体重是:";
* L9 M6 W& w% P# x0 {* P4 A2 O   Lee.GetWeight();4 f8 p/ B; }/ W, ~$ P; `: v6 k
   cout<<endl;) b+ e9 f3 A2 ~; n: j7 Y9 D
}
* X) T( U6 ^" Y1 w. \9 r% Z' N第二种写法:
' B0 K: z- }8 {" j% j* C: Y9 P8 X#include <iostream>0 e6 o" Y+ z) M
using namespace std;2 M/ l6 D& h3 P3 s5 w) ]
class Human5 m9 F) i+ A1 m3 C+ _. j
{
+ V+ W) X' C0 f5 }3 N8 Xpublic:2 D6 G8 n% f0 H5 N
void GetHeight();9 a* L, O: A" B8 v
    void GetWeight();
& n! R+ m; i% ?- T0 F. [ void SetHeight(int x);9 q. D  ]8 T( _4 a: V" Z
void SetWeight(int y);0 @" x# c/ h3 I/ i, Z
private:
" J* J7 \7 T* X% m: m int Height;% A  u" t+ n% N! Y( U2 P
int Weight;) e. K4 @8 p% u/ V
};
. m2 K& g* Q* Bvoid Human::SetHeight(int x)
- ~0 A- v8 l; ]{
# |! P" K& A" z, W Height=x;
* u' h7 _4 f: t1 m3 f* H1 J2 t}- t& G  l2 ]/ y: j8 l
void Human::GetHeight()
$ c/ O4 |6 d! M6 r, }1 a$ |5 H{: \2 b+ w" c2 m& Z. V( W7 n
cout<<Height;! `8 [  D) d2 B: D
}
" y( I: R- Y0 T7 avoid Human::SetWeight(int y)
. Y0 a+ J9 {, E8 e- c7 ]* C( k{
- C& ^, ^/ f/ o6 S8 l Weight=y;0 f1 g1 c, ]* T7 ^$ S  I
}
2 c/ j( \: C* O, t6 @" avoid Human::GetWeight()" G5 K& y0 ~2 k0 [
{
# [' ^7 J1 r4 Y$ b cout<<Weight;  E. M5 \: e( U/ Q1 M
}/ z( V6 P7 ?0 w- q
void main(void)% n6 L4 v  z/ E, _
{
6 U( m5 N+ C5 `( \   Human Lee;# U. n+ A# Q0 o, W1 r
   Lee.SetHeight(172);/ A9 W" ^0 `) ?% m! C9 \7 |- @
   cout<<"Lee的身高是:";
( o4 c# s; G- \9 x% Z   Lee.GetHeight();, c. X# j- S% b- V$ P
   cout<<endl;" `+ N; Z. O; Q* {
   Lee.SetWeight(120);- X  s0 m. l/ E: t4 k
   cout<<"Lee的体重是:";
% a. N7 d( {9 S( I   Lee.GetWeight();1 c- W$ E3 {8 m' E# o# \; b* H  P7 T
   cout<<endl;/ o# }7 a( }9 N
}! E$ Z; o# k* a
推荐第二种写法
; J7 D1 y) y  F! k) b: Z3 l# \" S
+ r. F- o* r2 ~: ^8 x
3 L9 ~$ j. y9 w7 G
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