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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:
9 u3 p- z1 ~6 a8 L#include <iostream>. l) |( S# A5 V0 h3 j$ H7 z& M
using namespace std;
+ w7 B* B! U' D" {class Human
8 A: }, v7 E( x{+ Q$ P3 y* p# [: z# B! u
public:+ o* {' m5 q. z8 s% j
void GetHeight(){cout<<Height;}! ]  o* k% c# Q* c8 c7 s
void GetWeight(){cout<<Weight;}
. m% \& r& e( b# I4 i# A6 H void SetHeight(int x){Height=x;}
# P% _& B* H; P: g# F* a void SetWeight(int y){Weight=y;}
' b% R9 o0 p* [, Y& B/ G6 k5 {4 T8 yprivate:
: n# I+ b2 w: O4 f int Height;
" E6 ?, k& [5 ~ int Weight;
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1 H5 q( Y. l3 Y/ ^' c6 u
void main(void)
  w, u+ F0 t' u+ E+ [' {* V{
2 x6 a6 A; O, _/ T- y   Human Lee;
2 Z9 |- R0 H! u5 A' n   Lee.SetHeight(172);
1 G' l0 a6 o$ h: r0 a8 ?' t: E4 x   cout<<"Lee的身高是:";# Q( C. |1 p. D, }0 w, t  S
   Lee.GetHeight();( n; J6 u) G) X- ?% i# g
   cout<<endl;4 X: F; Y4 i- l  ?" U& B% `1 Q
   Lee.SetWeight(120);
3 H; L8 A# E- H! y   cout<<"Lee的体重是:";
- J: K" }) A- c   Lee.GetWeight();
5 N2 S# o- O+ Y0 Q4 W5 \   cout<<endl;% j0 q4 e9 H5 V* W3 C
}/ G6 }6 s8 x# z3 W
第二种写法:; d0 ~, i. K0 u8 v
#include <iostream>
2 x& C0 ^/ @$ E) Rusing namespace std;
7 A- I5 p3 U: z7 H' Yclass Human
9 `! `7 v0 B0 y" [  p0 E! r2 H{5 S/ V% \4 `, ^3 `( L2 ~0 H
public:
& I9 c- _- w/ x# U* b+ Q void GetHeight();
, b' W$ `  P9 U; U6 a    void GetWeight();+ h( a6 _3 `# R4 Y( N4 D( N" g/ O
void SetHeight(int x);
, h2 b( D4 c6 r void SetWeight(int y);
5 h% M" @5 C% B5 N; Z/ O7 a3 h8 \  x2 ^private:4 n1 T0 e6 i; u% Z9 @
int Height;
4 }5 ]  R$ J, H9 V1 a int Weight;
" Q' |. {- k1 I; @};
. K1 v% E# a( W* Dvoid Human::SetHeight(int x)1 R1 W* J( n7 W* G, e4 F
{# o; q) K9 C- D/ a
Height=x;
2 T7 d& ?; P- j}
2 x, _4 _! Q8 ovoid Human::GetHeight()
" t: N3 p7 u! [' O' ?# @9 x{. ?+ J& V( J# C0 o# @$ b* m
cout<<Height;
0 R+ I8 p! S6 j5 P! S( ], X}. P0 ?& y! R2 L+ |. D2 b
void Human::SetWeight(int y). z4 g: v6 t  ], |% E( {
{$ z' ]+ D' @% N2 A, b
Weight=y;, F3 N9 v* t* Q: ?: ~
}
; x' ?  r8 k  l  H2 ]void Human::GetWeight()" N2 r, P, U8 i6 o8 {" a) N$ t2 |
{0 r% H1 D# G3 Z% E$ H
cout<<Weight;
' S0 x0 B; T3 `2 I, t}. K# y7 a# W! l+ J0 |
void main(void)
+ K, U* W, \8 V3 F2 Q% Y8 a+ P{
7 L+ V% ]9 h. X3 P$ H5 y2 F3 A+ L   Human Lee;
" X; r/ q% d7 X  v   Lee.SetHeight(172);' k) V9 ~/ F% }  N1 Y4 m, |$ p
   cout<<"Lee的身高是:";2 \) G4 l: m; e. r3 |% g
   Lee.GetHeight();
. L4 j8 B* k1 n9 A: R% p4 E: Y   cout<<endl;( R! P# F3 P* a( {
   Lee.SetWeight(120);
# K2 E, V  J6 R   cout<<"Lee的体重是:";
* {1 r7 T' ]% E9 {# q   Lee.GetWeight();5 k& |. v  [3 _6 N" L
   cout<<endl;
- W3 ?' X. _+ [, Y( T( |- ^" A9 b}5 f: E$ d" ^, I# \, v& ]
推荐第二种写法2 X1 S" q1 l* K# K6 V. Z: c
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