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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:- c% d: O1 c6 b
#include <iostream>
; w0 I& O, i7 k8 l: xusing namespace std;
4 \; j1 U. f" o# G$ a3 aclass Human
8 q1 A$ J) C$ {7 s{
8 U- f! _' p; kpublic:. v4 R! T0 D8 P* b
void GetHeight(){cout<<Height;}
$ B4 N% p. M3 g) p( \' G void GetWeight(){cout<<Weight;}2 [, o. n  H4 R( r1 c& o6 G
void SetHeight(int x){Height=x;}3 }' V) m0 f5 J0 C: _* U* q5 G
void SetWeight(int y){Weight=y;}
( v# E1 c& y6 D4 q3 G# Eprivate:; I  U% ^3 `" M* F: `
int Height;
8 ^: u% |( K5 z, f$ g int Weight;$ L. a9 F' t0 Z5 O2 W  c+ Y: ~
};3 Z  b1 \9 _6 m( p0 [

0 h1 t2 n  K& e/ hvoid main(void)
+ `& A0 W5 r) D6 |( u# R- r{& p9 O6 G1 ?9 I) b
   Human Lee;
1 ^5 p1 N: Y4 F3 T   Lee.SetHeight(172);
  n; ~8 q1 i) [( R   cout<<"Lee的身高是:";- c$ F- o/ j+ X' y) J) Q
   Lee.GetHeight();
0 g/ y% \: m/ \; W$ p: g, W# }   cout<<endl;
( {, j* E4 j- @0 N8 U7 ?   Lee.SetWeight(120);! U9 V9 Z, y* q
   cout<<"Lee的体重是:";
  K* N; P3 A: }1 T7 q   Lee.GetWeight();( S  y' w3 I  _& A
   cout<<endl;
" u" [! x7 E+ q0 s1 Y}
, B7 [4 r7 x5 y0 J2 o, m第二种写法:
: P* ]  i8 u/ S* K) \! g#include <iostream>, B% w7 _6 e# r; t7 Z
using namespace std;
9 F4 b/ s* j% `% T9 u4 D; Jclass Human& V2 g: O! N) M+ R; T7 J
{$ l0 |8 _' C! x3 o( {
public:' A3 i2 g$ Q( Z! H  N+ H* t4 y9 ^
void GetHeight();
" k. {0 B& I+ A1 Z! ~" P! E( o    void GetWeight();
# A7 p4 n. \! C& h5 G void SetHeight(int x);3 [+ s* @5 |# O) y
void SetWeight(int y);. j( D" w! @! b
private:
* l2 ?& h6 ^6 q0 S# z/ I int Height;
2 `- V2 o$ B) W. }, u1 e int Weight;
7 ~$ |+ x1 |1 X; C" Q2 q};. O& j5 \4 f, p- O
void Human::SetHeight(int x)
4 ~- r; d9 K6 @! ?* Q  ~* S/ u{
/ w$ I5 [  n% r% O9 e# `! g Height=x;4 R! O' g$ n( i. O' E1 u3 i8 Y7 b# t
}
, s' {. L' ]' t4 qvoid Human::GetHeight()
+ _2 i5 z5 v! b$ S: v4 C  l0 b) Y* b{
- T4 ^6 ~9 e7 L2 Q* _) o cout<<Height;
1 G1 m. L( n' C( c# k5 t9 C5 A}
) \  R: P& U) n0 o6 A- h- x. Yvoid Human::SetWeight(int y)" E/ b& `0 l" h! ^
{
3 u7 o4 Z1 Z- n5 `+ Z8 j$ h0 F Weight=y;
- m9 H$ E- A! }  @, z}$ a) V; g3 t- n- Z! M! D) H5 h
void Human::GetWeight()" @( Z: e" k* l& F( `1 n
{# C, P- W( X6 k9 B# k( T4 d
cout<<Weight;0 n" ?* C1 c. P1 W, Z
}$ {9 |2 g1 m; `* f
void main(void)
! K2 m: m0 j* j" c{( c+ g2 v, t2 ?7 a2 ]$ C2 U
   Human Lee;( V1 P! f  y. j2 B, x& O8 a
   Lee.SetHeight(172);
. E: j0 W) q- w  P   cout<<"Lee的身高是:";: |& Q& x7 \) j0 F6 ^* {& ^
   Lee.GetHeight();# |# ~  t, a0 t- G7 _& r( F
   cout<<endl;
! o, N# z, R4 J* q   Lee.SetWeight(120);
. U( H" S$ D6 X1 P4 ]   cout<<"Lee的体重是:";
7 u, \. r" j- \, o/ y' ~* B   Lee.GetWeight();2 x. @  V4 M* }4 `- U) F0 x; {
   cout<<endl;
: ?9 x; R1 L% m( |" l+ D8 x0 Q}
# H+ q7 J9 [- D( i& ^) V推荐第二种写法
% O5 W4 N. T: K  P. Z6 G! U+ ?0 b: V* t+ _% f8 y

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