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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:
% {& b0 c% H1 `/ |#include <iostream>% G. R- e7 K) w. M% w1 _
using namespace std;
: `  [/ M: U! L$ Y/ f% Cclass Human6 t5 e! h8 w/ l
{. K$ @9 J; G9 q" g: w
public:
* L& U; `1 d2 H+ D, O+ a  O5 @ void GetHeight(){cout<<Height;}0 _  U. P. v& E" z9 q. m& |# Q
void GetWeight(){cout<<Weight;}
8 m& T/ m7 Z' K void SetHeight(int x){Height=x;}
4 T; O- d) C; W6 h. ^# w void SetWeight(int y){Weight=y;}
# }3 n) f( n6 P3 d3 Yprivate:
: T! W$ n, r; N( o4 A int Height;
  {; h* p- U% g int Weight;
5 g4 k: j$ G7 G/ {1 q* m5 w4 r};6 @' `; \& _2 \

+ L" `0 V- e- y& g% C  O, Kvoid main(void)
) F* Z- [8 s8 r! A; d- j. x+ {0 K2 R7 S{% Q- t1 A: c7 |4 [/ N
   Human Lee;
* d7 I& Q  Y; s- f& P& S. ]! L2 t   Lee.SetHeight(172);9 Y% d* B9 _" Y- I
   cout<<"Lee的身高是:";
) j6 N8 t/ v% z   Lee.GetHeight();  o% `, ~. h! X
   cout<<endl;
& m& F) V3 l$ O- j6 @) m) }   Lee.SetWeight(120);
* [8 \" o3 h7 V! I( p$ A   cout<<"Lee的体重是:";, @+ t' z; H8 P9 ^6 p( j* }% `
   Lee.GetWeight();' d. |8 ^, [" U# H5 L
   cout<<endl;+ z' {! m' R. Q3 @8 S
}
9 E! m: k4 x, d第二种写法:
  T2 E/ z2 Q+ T* b6 {% p9 H#include <iostream>" y8 V  t0 |5 ~2 z6 m2 S, [* \# f
using namespace std;& j- W2 U+ N' n4 A7 F
class Human
5 b  S8 y! j: {9 `2 ^* p0 H{
4 \7 Q2 y) ?" ~' T3 A+ l* R1 Dpublic:% y1 t" L* _7 _: s0 W6 U
void GetHeight();0 u; S% ~( P: M
    void GetWeight();& i0 b9 e& ^' [" X+ a* f
void SetHeight(int x);
. |( t2 g; f3 S void SetWeight(int y);1 {4 I- E6 T; g. \* k
private:9 T4 a# ]& f  ]. W4 \0 X! U$ ?
int Height;  `: H. E6 d. e
int Weight;  m- R" r! p, g8 t. a" i) o
};% q9 r4 g8 @( ^2 M# S
void Human::SetHeight(int x)- `+ U5 x8 @( `, E7 e* e
{
0 Z# F  @- t  n  e& g Height=x;
1 {5 X6 d) h7 e}
0 i+ L1 q4 `7 _9 Q7 @1 L6 nvoid Human::GetHeight()
" T+ F+ d+ U  x" W9 h/ _+ R  C6 ?{% m9 ~! R% d& c6 r2 k% L, K
cout<<Height;
0 E$ [+ \/ Y* @; Z" J7 ~}
  Q, l0 c# F, Wvoid Human::SetWeight(int y)# N" m2 Q( t7 v' o. i
{
& ^5 m  q1 _6 Q6 I$ m Weight=y;# `( x1 c) a# L) z3 L" Z+ f
}
/ R! \2 n3 ]$ ^  u+ F# ivoid Human::GetWeight()
% q. g5 q  a) @# I; d{: _) f+ V2 ?9 A" R2 p3 D+ Y
cout<<Weight;
7 K8 n- C4 m, ^0 B) j4 R}- @, U+ n) d$ s% k% _0 \
void main(void)
. F# J( X4 L7 ^; J& o) Y{
  ^) ?: J( f4 K( {% s- ]   Human Lee;
% p. b3 s8 b1 i7 \1 x. k   Lee.SetHeight(172);/ w7 C/ R' _5 u# x% i1 K4 }+ R
   cout<<"Lee的身高是:";% F9 n7 l8 H, P2 R. U# `+ J
   Lee.GetHeight();) w' q$ d/ n* Z9 d& d* H
   cout<<endl;2 d* G, V6 `; E4 z% F, s# T
   Lee.SetWeight(120);& v+ j( f3 u6 H' W
   cout<<"Lee的体重是:";
4 }. U4 h" b# b+ A  i( k7 k   Lee.GetWeight();/ H% ^2 d7 y$ z1 Q' \/ h
   cout<<endl;
8 j0 `  h9 W, B3 B}6 o5 `" V; y1 _1 u" }
推荐第二种写法
- P, C  q( A* C' s! L2 l- Q0 o+ N# \: ~& ^: a
5 w% v; K& J  o
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