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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:( w8 ?' j" ^7 f4 M
#include <iostream>1 |4 V. E* h& \: h. L& w5 W
using namespace std;
) q, E/ v3 e7 M- z' Oclass Human4 Y3 X) B, \& R" t
{
9 |* C1 N$ v5 `6 K4 lpublic:
. `- ~) n0 k! X: Q) a# p) {1 G void GetHeight(){cout<<Height;}9 X, J1 u+ d* f" d* |5 r$ w/ c
void GetWeight(){cout<<Weight;}
- {# I; J$ m% j void SetHeight(int x){Height=x;}( r( T. m( z+ _; Y  r2 O( N5 k
void SetWeight(int y){Weight=y;}
" `& _- A: G# k3 K" ?0 ?private:  v( s8 z3 ]- v- @" M% n) w) Q3 ?
int Height;
6 ~6 k3 }+ a. L6 D  m int Weight;
- l8 }: B* z* z  q& n& G};
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void main(void). T; O( k" G9 Y7 f1 y" B
{
. \3 O3 t7 u2 N9 V' L+ v( Y   Human Lee;) P3 \4 z$ y, P" |& V8 W1 n( _- N4 A
   Lee.SetHeight(172);$ i  N! s- x1 c- ^  L$ X0 u
   cout<<"Lee的身高是:";2 ~! C! M5 A6 C7 {' O* J5 B' F; Y
   Lee.GetHeight();
& Z, [* v" X2 p1 w   cout<<endl;
( s) x' C8 q) U- V& K7 W+ ]   Lee.SetWeight(120);
6 a& L1 Y# P3 E6 M) j3 q   cout<<"Lee的体重是:";
( g* @! a6 ]9 S# L. r   Lee.GetWeight();
# l7 A! Q* g0 _8 T& L   cout<<endl;8 O, h  o3 i+ \
}
) p( H9 U# X6 r9 p6 A7 R第二种写法:; H& V+ }  [6 z3 K" i/ u3 P: ?
#include <iostream>
% f5 R9 M9 P# [4 H) B. w1 nusing namespace std;( a$ P4 x$ c7 a/ t, H0 U. c9 Z
class Human
* `. t/ t) v7 T) V{4 z/ z2 R$ K, v. F
public:  z: i! r, |/ `% G
void GetHeight();
8 ?8 [( r+ ]% W0 P5 h    void GetWeight();
- A% _# |. ~' n! c4 W7 l" a void SetHeight(int x);
+ |, m, @1 s6 r' M- D0 y8 X void SetWeight(int y);
& L: E9 d; Q  K* w: Kprivate:
& E+ o: n1 _. ~, ^+ i- V0 S/ ^ int Height;- d+ S" V! X) e+ E' H! w
int Weight;
+ ^$ B) q" \  v/ ^. H) w};
$ K! n& {4 F/ q' r3 Avoid Human::SetHeight(int x)
  _' `& ?2 w% `" D- R* P. k{5 \9 n/ M. z2 o6 M: C' Z
Height=x;
1 ?' R  q" Y6 d3 ?* n" H+ \}
- N0 j1 @1 ]. e- \void Human::GetHeight()$ |9 G& d0 O" r; Q
{' B5 Z5 z' |2 I. x$ _8 _
cout<<Height;
6 X; {, u( H* n% V}, B1 @+ e/ t* Q0 p/ q3 @
void Human::SetWeight(int y)
3 i& Z% I  ?: m; _* }. d7 Q' {{) R1 [0 T" l) }4 |* K$ m
Weight=y;
0 N, e3 R9 P7 i+ O4 ]* {; u6 t& N}: }2 ]( R) o/ _% r# g. `) F4 b
void Human::GetWeight()
6 o5 ]. b2 R; z9 i{/ E" _; l! j- j& L2 b: Y
cout<<Weight;
& k; `; }$ W: f" @& q4 j7 J1 ^}
+ J2 R9 h1 K' z4 r& V  rvoid main(void)
7 h# @4 ]8 r# [, C: i{
1 G" n" j4 Q* x! @5 s* s6 K   Human Lee;4 \; `3 c% L& x" n% t
   Lee.SetHeight(172);- S4 w( E9 z$ ^0 u, g4 g9 L( G# s
   cout<<"Lee的身高是:";* d1 z1 R9 g0 e2 E' j) y; N/ I
   Lee.GetHeight();; Q) c5 o% \+ L" }& A# g3 D
   cout<<endl;, i( r/ D  U9 S. o4 J; D
   Lee.SetWeight(120);, V6 ^; y0 v- ~, g5 @+ Y
   cout<<"Lee的体重是:";5 f$ Z1 @. z2 |6 L
   Lee.GetWeight();
* D- {  Q! B, \" _' ]+ J   cout<<endl;4 e" C- G% A! h. [) n2 u3 b5 z# O7 ?: K
}$ q/ y9 ~7 k" \4 u2 p+ j
推荐第二种写法
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