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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:/ e: c. O/ f' B" Y- V( V
#include <iostream>/ B2 W" q, H5 O/ w
using namespace std;
+ ]. p, K8 _8 q3 W+ Zclass Human! |; I  m5 t* _3 L9 C! ~
{
6 _! U! ^( ^. K; C+ Rpublic:
/ O7 @( [' P, l7 z0 ~& ? void GetHeight(){cout<<Height;}6 S  X, U4 k3 o$ j) w, R0 v
void GetWeight(){cout<<Weight;}
: s+ ^& N/ r% a9 e void SetHeight(int x){Height=x;}. p) p+ @" H4 a% M3 x
void SetWeight(int y){Weight=y;}
, O( [% @2 y) kprivate:9 Y( n( C% P: ]
int Height;
$ P4 v6 o7 n, l int Weight;
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void main(void)
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   Human Lee;5 v6 U& o7 k7 W- [4 E1 w; \& v
   Lee.SetHeight(172);
( y8 H& E5 U# H   cout<<"Lee的身高是:";( J! [0 g7 z( M# F5 C
   Lee.GetHeight();
4 M% k' c8 ]$ w8 \- Z. P. Z   cout<<endl;
2 l  P5 P" _% ~   Lee.SetWeight(120);; F5 G$ g2 z; [/ q7 a" p  c
   cout<<"Lee的体重是:";
* C8 G. I6 X4 ?3 j: J3 f5 y- K( Q   Lee.GetWeight();3 a- R1 _0 r! l' `# }
   cout<<endl;) H) s. ^* z1 f5 M2 ]) N
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第二种写法:
& x. P' e4 Z- w/ |#include <iostream>* j  @5 l& y) q3 A9 M0 I$ k, |
using namespace std;' t8 ~, f# G' ~+ L. ^( S
class Human6 |$ L. t  j0 J8 w1 i- y
{5 ?( a4 h" X, c% O# A, X: l9 j8 l
public:
7 s( D. R' R' J* L5 M void GetHeight();
+ D4 I0 c' `* t/ y. l, y    void GetWeight();. h- X- r; X- a
void SetHeight(int x);6 w+ K% s7 z' b: \8 o5 K4 a3 Z- p
void SetWeight(int y);
3 u1 C. c+ @/ N5 m& T. i0 D" s9 ^private:/ F" x/ |# F0 l. x7 K8 p# _
int Height;2 U* o" w) v- s! I- B
int Weight;
: `! w  `* g8 T1 r$ T! d' \+ V. {};
9 h( V3 I! M( gvoid Human::SetHeight(int x)
1 ^1 k) n3 D* `. K& ^" V  k& U/ ~{
" _+ V, _+ S4 {5 P) ^# \& f0 N0 d- i Height=x;* [$ p1 q  E1 F9 V. C. D
}
! [0 l: ^1 `+ `6 tvoid Human::GetHeight()
3 ^! E( ?) ~7 c9 q{
5 Z- J6 x7 t7 V, p) E( r cout<<Height;
1 z( Y2 Y! H; W8 ?/ o}
# Z% v* r/ `% @9 evoid Human::SetWeight(int y)+ _, F6 }2 F/ ?& C$ `
{
% g6 C2 A% {3 S, [& p, m Weight=y;) k$ V; V7 c8 S/ ?; R' ?
}
, n9 B7 @* D  Svoid Human::GetWeight()
, p6 v& d6 q8 g{2 ]7 k3 M& `. y+ b8 G6 z4 o
cout<<Weight;
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void main(void)& t/ K+ f3 z9 m# m5 j3 O9 k
{
& u4 i* w' H/ x; I# }$ X5 l   Human Lee;
5 o2 w9 l7 |; C7 s   Lee.SetHeight(172);0 l1 r, |7 \) ?7 P
   cout<<"Lee的身高是:";. \( K5 Z5 \; M" R/ {: i
   Lee.GetHeight();/ G. Q  V. c+ D
   cout<<endl;
7 k7 U$ f/ L' H2 Q$ ~. v   Lee.SetWeight(120);1 y/ J) S. a/ s& Z
   cout<<"Lee的体重是:";6 x9 T1 h9 _6 ]/ n; J% I
   Lee.GetWeight();
1 I4 J  a, i- m& `* B   cout<<endl;
! a$ v9 }( n  F  ^* Q* V% R" N+ K}+ [  `$ {; s' M: [+ q( [+ S
推荐第二种写法
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