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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:4 X+ J5 x; t/ e( U" Z
#include <iostream>
. V6 M4 t" m' c3 \! b5 eusing namespace std;
7 ~+ I0 f* L) d6 I2 a$ f5 L/ qclass Human4 h1 z, o. h$ U4 L
{1 E" y' E! {8 F* }8 V# t
public:
1 N" J6 `- O2 x: b: I void GetHeight(){cout<<Height;}
6 _% ]! P4 b# h2 C7 q void GetWeight(){cout<<Weight;}. @6 j4 i  P. k
void SetHeight(int x){Height=x;}
5 @) E, X; {: C- E/ x1 K  V# f void SetWeight(int y){Weight=y;}
' n; \9 J0 k  \private:
% Y3 [0 J6 p! y+ h! M- u( j& |0 {) b int Height;% U/ m5 m1 u* I- d' R; y
int Weight;
/ R- a# K0 M8 n) U+ u9 |3 j" F! [1 }};
: V% B" t8 \" s8 }; D; b% F# j) W5 `6 }0 y0 V
void main(void). E$ _# {2 ^7 ~
{  F3 J7 g4 R& i3 P9 `: b, j
   Human Lee;' Y0 {  i# p: u+ ^% `+ j
   Lee.SetHeight(172);
& O' m% l; e1 o! V; M+ @7 Q   cout<<"Lee的身高是:";6 C( b* T* W; t. Q
   Lee.GetHeight();
# A, _) Q- R: @3 q   cout<<endl;$ S' U! J$ S( e  _9 k* c' V1 A" R
   Lee.SetWeight(120);/ _2 G6 v. ?5 m& v' q  I  i
   cout<<"Lee的体重是:";& z) `  N* f* f& `5 G
   Lee.GetWeight();
8 p" v) X$ {% U- \% y: I   cout<<endl;
' Q5 G% |4 S6 ~5 ?5 b* Q4 L6 U}
; Y8 [* V4 w) e9 C第二种写法:) |( Q7 ~, s6 q
#include <iostream>
$ s* _' F/ h9 }using namespace std;
" Z  [2 P: D: @9 L. \1 W& `) Yclass Human& h) e; ^3 _5 E, w' {4 p
{
# D( M& m& b- C/ g6 Y; Dpublic:
+ D" L: n) l& t5 L: B, r void GetHeight();
( e5 r. Z/ |: r" F2 K8 J. u    void GetWeight();
* C: D3 P+ V" ~# R/ [ void SetHeight(int x);
+ q# J0 ^0 @# d) O1 l" U& e void SetWeight(int y);0 }) X' d. L1 L2 G; u
private:
- ]5 L; e3 A, x9 T! L: c% R, v  I int Height;
0 c* t5 v+ I1 i$ D' u int Weight;
  \" j3 Y9 h2 S, Q  u; S8 f& G* h};
! y0 e" g, s7 g: gvoid Human::SetHeight(int x)
0 u' N' b8 i8 T{
6 \* n* p/ q' @ Height=x;. x; a. R4 C- T
}* [3 t" ]3 B% h# n- \/ V4 X
void Human::GetHeight(); P5 Y" ^# C6 @" L$ ?. ^7 _& f
{
0 {' _8 ]3 w- F6 m& X# l6 T% r cout<<Height;
6 u* `6 T  C- q9 P3 P% k}
" [0 n: n2 o' Mvoid Human::SetWeight(int y)( q! E0 B: [- Q9 a5 }
{, S; T* c: ?' s( x6 m: T! b
Weight=y;+ g4 J$ O3 T0 _1 r9 z" t4 B
}( S9 w+ p% K  I2 ~9 e" }
void Human::GetWeight()4 Y$ L- G/ m6 X6 x& \/ q
{
+ j. W2 F) Q7 l, x4 r4 w cout<<Weight;1 g$ C5 b: _& H/ Y+ r
}
* `1 ~# T, h; e0 _/ L5 Kvoid main(void)
/ w  z& {. {/ m8 C{. B. P4 B; x3 M8 [
   Human Lee;8 f, [+ F! Z/ F/ B% B
   Lee.SetHeight(172);" X  k* x! m  [( S
   cout<<"Lee的身高是:";! F- r% m" V7 y. p; X
   Lee.GetHeight();
% T5 v1 |/ i/ G( F9 g! t0 O# r   cout<<endl;0 h- \; h+ G  }6 J- R; g
   Lee.SetWeight(120);
0 m  N% t5 k0 i5 T   cout<<"Lee的体重是:";
0 H3 A# m1 a! F- M/ a% Z; F- ?   Lee.GetWeight();
$ {6 z0 M; w, k6 |- i   cout<<endl;! k( ^: f% `. G. D+ ]* Z6 `
}0 G: N1 P+ F+ q. J1 R' ]
推荐第二种写法( ^" s5 {" {& O$ G: d4 g4 i
0 `) [% h' W) y) v$ A8 |- a

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