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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:. |+ n. N9 y6 ^* }/ n! j8 g2 L
#include <iostream>
. C% f! z6 x' M' u$ B- T$ Lusing namespace std;5 e) h% W% G8 Q$ E0 j. x0 _
class Human
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public:0 B) ]2 q" m' e
void GetHeight(){cout<<Height;}
' Z& l+ K) C% I7 {7 V4 X% W void GetWeight(){cout<<Weight;}3 L8 P$ l( n0 _% d& D! H& r1 Z
void SetHeight(int x){Height=x;}
+ C2 \  j: ]9 G4 v7 y void SetWeight(int y){Weight=y;}
5 [0 i0 S& b+ j6 bprivate:% u3 C0 C% |9 ?! y  O8 s
int Height;6 I+ v4 B; p4 D0 V6 @
int Weight;3 H3 S. h1 ?# K
};
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9 q3 y: v6 U) ^, f) Mvoid main(void)
3 w" L5 u5 Y* }1 U0 M0 Y7 ]{
  o$ c: k( r/ s# q6 A5 S# M   Human Lee;. ?% b, K5 I& ^
   Lee.SetHeight(172);/ h! S! }* U  w; T- K( }
   cout<<"Lee的身高是:";, m* S) W6 \/ d
   Lee.GetHeight();
; k1 g7 Y. K% I# i   cout<<endl;4 K# l0 k: \! B5 E# @
   Lee.SetWeight(120);; V) r, P2 m( U, A- e, w
   cout<<"Lee的体重是:";: P2 k. `" ]  W( K" a) t: v$ `( X
   Lee.GetWeight();
) e1 r2 A2 N) Z) l. B7 r0 ^% K   cout<<endl;
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第二种写法:% B5 E5 u& B/ d& L0 V! c& Z: s
#include <iostream>
2 k. ^( F- g2 L/ Uusing namespace std;
& E. f( X0 |+ w+ _$ a4 oclass Human+ @8 a9 q& q$ y3 a
{" G' |' p' ^& d; _
public:
, h; @) S: g7 \$ H% Y void GetHeight();% H4 L. D' O. V% x4 Z
    void GetWeight();4 j9 G, @. Z" @" j) W* |
void SetHeight(int x);
8 ]3 `# F1 K  L5 Q6 @ void SetWeight(int y);
' Y7 p8 ~" o! s; V% }private:! |; Z; r9 x% w/ t, l% r
int Height;
3 E5 j+ J2 e5 X2 ?/ @ int Weight;
4 [- M+ e. {1 G) ]};$ M- Z) c- t+ s9 `
void Human::SetHeight(int x)
# V- c8 _! z( @- |4 |% F" J% V2 v{
/ c, G0 G5 C3 ]+ m3 y& ? Height=x;0 |. `6 }( K8 t: _3 |7 u
}5 \0 A: E0 p- U: h- S5 m" F
void Human::GetHeight()+ A$ [1 T! [) u( O+ F1 r
{
, y) M0 o! }! m! W cout<<Height;
+ O; T0 [/ c4 U4 Y8 B}
/ w9 C0 z8 I: o& {- h; y8 q& ~; i: ]void Human::SetWeight(int y)& D3 Z0 N, G" c) j4 w
{4 c. ~% D! P( l# s+ w' j  F
Weight=y;4 F0 I+ R. g. M2 }  M% i
}
, K: Z$ z2 X0 W  r$ P0 Hvoid Human::GetWeight()' O' N+ {9 L% A1 P. D
{6 i3 t' H' S7 }, Y& M4 l# `, N
cout<<Weight;
& L" F0 f2 k& y$ f; |}
, X5 m8 J' u0 Qvoid main(void)& o& A2 \6 a9 l- P( ?3 C: c
{
- a1 V3 e' y$ I$ z9 G   Human Lee;# g0 s0 ?$ V( y% n9 l; h4 V
   Lee.SetHeight(172);
7 q- D& x( O$ m! X   cout<<"Lee的身高是:";
; V: v9 ~/ B) E1 x) {6 t   Lee.GetHeight();, p3 @, u: C8 _3 G7 @5 |7 w* v
   cout<<endl;/ @! t0 v# L  o2 c) B1 J5 ?! a
   Lee.SetWeight(120);
- d  O$ W& c( I/ E0 `6 n' k   cout<<"Lee的体重是:";$ }, q3 ?& d& e3 e
   Lee.GetWeight();
' i! c% U( h3 i) Q+ w   cout<<endl;
: d2 ~9 v( Q. o9 R8 ^# I}2 r" P  {3 R3 V
推荐第二种写法
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