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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:
2 @4 h! h% p* w$ G" j9 [0 ]1 O#include <iostream>) ?: t2 k8 [" C( R: Q$ p: F  O
using namespace std;
& c$ W; Z( U/ kclass Human$ Y' Q  R- c1 l' Y7 H0 v
{
0 ~, p$ t2 w! R$ N# |+ Qpublic:2 E- L+ C  d3 Z+ F5 y; X7 y  l8 e9 Z
void GetHeight(){cout<<Height;}
) X( ~2 b/ h8 @1 e3 p% j void GetWeight(){cout<<Weight;}
' E3 |7 S* V2 w- R void SetHeight(int x){Height=x;}1 d4 e6 y3 H) F' Q, s1 y! ~
void SetWeight(int y){Weight=y;}
! h+ p8 d3 o/ l3 q& z5 j+ lprivate:
* j/ H' W% K' g+ K int Height;( }7 o3 r6 S! Y
int Weight;, N" W; W" {" D8 I
};* {; ~; e1 |: W3 F" S, V  I
& O2 E1 ?: L6 }1 s7 Z' w
void main(void)/ S0 R1 y1 y% [% P+ b
{3 t+ C" ]6 h9 u9 [! y0 d9 m$ m
   Human Lee;5 \# W0 k6 v1 K( i, O9 ~
   Lee.SetHeight(172);
2 {) m8 R, _# ~! y   cout<<"Lee的身高是:";
% `# M9 r' m8 K8 D# d: j   Lee.GetHeight();
$ q/ N! ^2 X, P* d8 |   cout<<endl;
* k' V. V7 e/ R- t2 U1 B/ S   Lee.SetWeight(120);
, v4 D, c. M6 S1 g   cout<<"Lee的体重是:";
! @) F8 R& a) c3 P- o# l   Lee.GetWeight();
9 \" N+ @) W# Y; h, A   cout<<endl;
! F, _; [- S( ~8 t}
0 v1 A- C: m: W' r8 i% G- }- ~第二种写法:3 M0 K8 A# s9 Q/ B& ^
#include <iostream>- c# I" N" w9 v% h  |+ f8 {
using namespace std;
& Y+ B- z. W1 I  H3 s3 X  J4 fclass Human, Y* S! p- s! L% x/ `8 ^2 P* F! \
{4 ?5 z) S5 W9 {- n" y6 @
public:
; D. {0 N& H! m' l void GetHeight();! u7 `' M' s3 K) Q. v9 W4 Y3 w# O
    void GetWeight();
' z: [/ `: k' G/ h void SetHeight(int x);
4 }+ I) l$ U, A2 _4 x4 Q# u void SetWeight(int y);* E! E  ]; R5 A2 j
private:
) p6 @/ e9 A+ b7 s- D int Height;
/ w. ~: ?- p# [( E int Weight;2 O, {8 g0 @* ]
};
: h# m& z$ R+ evoid Human::SetHeight(int x)% N" L% Q; P( {! d9 u! ]4 t# D
{
& `8 T3 m6 p! `! `; v% A( K1 h Height=x;
5 r) t2 L  a: s, `8 _; O% P+ G}* v: X% P+ F5 O6 Z6 c5 B3 O
void Human::GetHeight()5 f; H5 }9 l9 r% m4 d# i
{
& u0 o' J% x1 N) m4 ]; A$ {4 _5 Y+ K cout<<Height;' `: G5 {. ^9 r9 w- k
}2 i* a' b) m! O. T3 k8 W% R3 a
void Human::SetWeight(int y)
  U+ B, P0 }5 l{
6 C% d' c: Z! s" }4 u. u4 W2 h Weight=y;8 P0 f, Q; h1 m
}
, y7 b7 Y, m2 e+ M9 d/ }void Human::GetWeight()
+ K$ ?  v# t6 ^1 F  m{7 }0 p! S. r+ j* W
cout<<Weight;3 l7 W6 \# z% J7 n5 P# C) V$ o
}
5 R: i! V3 ?# h3 {# M, h3 M; {void main(void)
9 Q+ A8 W: Y! ?* P& i5 m5 ^{  b7 h" ]' Q1 c0 S& C5 e/ B
   Human Lee;
, P7 b4 I" D, a* b   Lee.SetHeight(172);
9 w: C: Y. s! r7 n   cout<<"Lee的身高是:";* u4 c- d5 K! I9 H: I4 a: L& N
   Lee.GetHeight();# o8 ]# E. p5 R5 ?7 S! N: J  {& {
   cout<<endl;
& P/ @/ o% E+ o! h   Lee.SetWeight(120);
! K4 t2 G/ ~2 `8 t8 h3 q% h  k3 h   cout<<"Lee的体重是:";
9 R: M/ Y* |0 K   Lee.GetWeight();( j6 B+ t6 X4 O! G8 r4 ^, M2 ?
   cout<<endl;
* c, y( u( x% g% b5 X- `8 K}
! V1 ?; u  R3 I+ C7 \推荐第二种写法
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; _9 a2 I  r- [4 {
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