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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:
4 ?) F3 M1 m! w" r1 _#include <iostream>7 E# t. _! V. n% \) _( u& J
using namespace std;
& }$ H6 f- _' f9 C( j% h  e7 Mclass Human& w  n; T# r# I9 u$ h: l- s
{
) Y; ~1 b0 g+ i" k& P! V$ Ppublic:
6 E4 N7 l/ f3 r4 u) w$ ~ void GetHeight(){cout<<Height;}
+ A3 y9 _- v4 V. i- U void GetWeight(){cout<<Weight;}5 E  C+ j: }  G0 y
void SetHeight(int x){Height=x;}
: o: \) _' O- N+ T( R8 r void SetWeight(int y){Weight=y;}$ }# T$ }+ _  r! z5 P$ }
private:- I% _' p+ x* O: m9 y; i
int Height;8 o4 N$ B# Z; X* p2 b6 ^* H
int Weight;
  l/ R7 }4 a9 e4 l0 d7 \* m};
0 N5 n7 S: G" k: V. S  N, ^% Y- N
void main(void)
+ r' b; @9 D# |; O. U! I0 m( C/ A# \{
1 j7 P* o; k; e5 F; n5 C   Human Lee;6 R: z5 k. Y0 i( I- y) p1 X1 G) x
   Lee.SetHeight(172);5 N. q: T* I3 q" x
   cout<<"Lee的身高是:";8 @2 J5 |: Y! |) \/ W5 k
   Lee.GetHeight();
5 ^" U: `% }& Q& o& Z) K, c1 M8 S   cout<<endl;, p+ U2 O9 k3 p- |
   Lee.SetWeight(120);
: ]6 X. m4 D  d   cout<<"Lee的体重是:";; B5 K$ @5 T# u+ D2 s; k" Z! Q% _
   Lee.GetWeight();& A8 {/ ^2 i: t5 x* v0 e- {
   cout<<endl;+ U0 {0 J. c( A, |
}
, ~+ F! J7 c6 p第二种写法:1 t" s& j) `3 ?& J. C- p
#include <iostream>
1 L# T& w  L- h; Eusing namespace std;
: _% P+ u) z$ M* S& Lclass Human
4 U! h2 B" c3 x. {/ n{7 J* a  `3 O4 e4 N9 g- p. F
public:
# }/ p: t; [6 l" A) Y4 @7 E void GetHeight();' S8 a2 t# g- s/ u; f! V
    void GetWeight();2 l1 J1 L( U; ]* C
void SetHeight(int x);% v( B' A6 Y$ d; a7 s
void SetWeight(int y);, X  k* f" Z1 b; Q, V: a7 Z2 D/ _
private:8 W. F9 E" T9 ]8 o
int Height;
6 N; r% \3 H7 x4 ? int Weight;1 Z' K6 i+ ?/ i
};
7 g: J! `8 K. g5 s1 zvoid Human::SetHeight(int x)
5 b4 c# L7 \/ [, w) \) }# V" ]. Y{% X6 p* W" m5 c) \6 u! c) a: ?% M
Height=x;
  n: t  M4 N7 d" {4 v5 w}1 ^9 a+ t1 v% B) G) g
void Human::GetHeight()
+ u3 `: @- C" r! R4 j3 w- W: v{- Q3 [7 t# ]* x+ \/ p) A
cout<<Height;
1 p% A% ^( D) v: l* y}' C5 S% M$ L1 Z4 H- C( X# }
void Human::SetWeight(int y)
1 C: T* n' c  c) H{
8 _+ @" P! H2 U& ^1 z Weight=y;
3 B( u7 R9 F. i, M% e8 u}
8 f2 J( @5 E' Y0 t5 p% c' Yvoid Human::GetWeight()6 X& [7 W+ O! `( \' I6 h( @
{
# @. ?! s, x- a9 f9 U+ [ cout<<Weight;+ T7 j0 V% @8 }  H5 l& x) z; A
}2 a4 R7 R/ [- a" B+ M! b
void main(void)
" B& ^* V$ ^# l& P3 I3 T{
5 A% }5 y" q6 {7 C   Human Lee;
# K' g1 J0 Z. P3 d   Lee.SetHeight(172);$ A" a7 e$ G/ m! Z% l* _1 O
   cout<<"Lee的身高是:";
' m  H4 F/ y  i5 j4 Q% p4 W" L2 V   Lee.GetHeight();
  W4 I; z0 b% x   cout<<endl;7 J* y. t5 q" }, E$ g
   Lee.SetWeight(120);
; G4 L7 }. {8 c! y   cout<<"Lee的体重是:";* Q% N9 ~& F0 V4 u0 f
   Lee.GetWeight();1 U/ p( U7 a- \1 n6 [: l6 m, p4 h
   cout<<endl;4 B' L3 B7 @- R
}
. ~5 P, I! j% c, x推荐第二种写法
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# a# D: [# T% P5 P# Y0 r0 ~) q
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