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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:
$ p2 I6 q- g/ u" K#include <iostream>4 h; B) S0 B% w5 D( v
using namespace std;9 x4 E% G, K( t' o: x
class Human
1 g: F  ?4 p4 \" \{$ ~8 f8 t& r7 p3 x. c  ^" \
public:
: A3 b" H& O8 |: t. c: |2 b+ e( G void GetHeight(){cout<<Height;}% L! J8 E3 x9 `  c$ I# Y+ ?& g
void GetWeight(){cout<<Weight;}
4 c2 P" V+ m* Q8 D3 v void SetHeight(int x){Height=x;}
* `3 I" [  w5 n; e& R8 O void SetWeight(int y){Weight=y;}5 X( a5 k; j; y9 ?/ u8 s% V
private:
. \, g1 i' k% v2 } int Height;3 f( C0 h+ Y, [7 \
int Weight;
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, q7 Y6 f6 _: V- W/ Xvoid main(void)
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+ \; T$ g/ y1 L' y$ U% p   Human Lee;
$ J& ~8 g4 h: ^# E8 g   Lee.SetHeight(172);
$ g* _% b- b2 _) f3 a5 _. R8 A' B   cout<<"Lee的身高是:";
: _6 K! A, c$ X* C! v9 W4 B   Lee.GetHeight();$ Y$ l- {! k9 S7 C
   cout<<endl;
, v! j5 U  Y& B+ @1 W2 g  A& {' i   Lee.SetWeight(120);4 I, d: \3 V  \) d/ i8 Q% z8 R
   cout<<"Lee的体重是:";
8 ^  i* v$ A) d* q( \; D/ `   Lee.GetWeight();. G& K- ?* H/ K+ Z% \) e
   cout<<endl;
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第二种写法:
# J+ T. A+ k( L& W#include <iostream>* M- {; ]3 n7 ~
using namespace std;
" L. e. |. f. u) _9 @: ]8 K  n, Iclass Human: V7 b' {6 u/ W& B! L$ d/ a
{* U: Z4 s$ h0 t: d6 L, c
public:+ z- q+ r+ w* u$ k9 r3 B
void GetHeight();/ h# y8 }2 [  w% _+ z) \/ ~, O- r
    void GetWeight();
. O% S7 i' ^  I3 J5 v6 [0 o void SetHeight(int x);
3 J  R* Q4 u2 S5 q4 j void SetWeight(int y);% X, ?: ~0 O% V* L! m& G' B
private:
2 m! C: p8 o. N! l) F' [; n int Height;- \) M- e) A  v& w
int Weight;
$ N( h7 I  i) n- t$ Q};
5 g* Z% C# A9 j( u! q! P5 hvoid Human::SetHeight(int x)
' I5 Z0 f* B+ _# `! x" ]{3 |! x, ?4 ~% j: `) f, ?5 _
Height=x;
0 b' D1 i; S6 X0 v4 R. i& [}
; f: a( o  g( C2 j8 R/ }, Lvoid Human::GetHeight()
: n0 m! y' P' d( @{
; O! V% X7 H3 W' X; N% \) }+ I6 u cout<<Height;4 {, z' T% C: @% g
}8 }; G$ q, j+ d% P9 Y# y9 }
void Human::SetWeight(int y)  T+ H8 V# B+ C2 e
{0 W4 U' M& y7 P, N8 \, A
Weight=y;
6 m" a/ C7 s" @6 v$ y* [}7 ?% t. d5 i' m$ ?: {
void Human::GetWeight()
& p* y$ m: v& H2 i{
1 L1 D9 @$ M5 p1 O2 N! k cout<<Weight;6 _7 p9 h- b- o  e7 j! h( s3 V. `
}( `, |; O( C9 o0 f  `2 \# A* i" {
void main(void)! R9 E! @8 J% P) n1 S, d# [
{0 g8 J2 l( x6 b+ f# {6 m( d
   Human Lee;  O" [/ x9 N+ m' l/ P
   Lee.SetHeight(172);( Q  B  ^, G; o. `: d( f( N
   cout<<"Lee的身高是:";
: }# d9 w4 Y4 S3 t( f7 a# j  o   Lee.GetHeight();4 @' i  z% }7 g6 e0 f+ @5 O/ A
   cout<<endl;( b. D7 |/ [0 q
   Lee.SetWeight(120);
5 Q7 e0 i, P' a# w   cout<<"Lee的体重是:";5 E4 o* a1 F2 G% W8 J
   Lee.GetWeight();
/ u5 @7 G" h% f0 h! a   cout<<endl;
3 x! N! H9 j) C( m}- M& d  d# V3 W8 {  f
推荐第二种写法1 @' {2 _6 P$ i* F9 J# e6 N  p/ ~' p

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