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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:7 p5 t7 Y1 x' k7 ~: i3 Q% \9 ^
#include <iostream>
4 |! h9 m7 _* r; E+ wusing namespace std;. l5 ]& Q# `. f& h6 l
class Human
+ y1 `* K+ ]# B% L( ?{
1 h: L& E5 m4 }" o- C9 b# V4 Bpublic:9 b8 W" x/ F( ?4 C, a# D
void GetHeight(){cout<<Height;}
) @4 V8 E7 \4 M void GetWeight(){cout<<Weight;}: G# R, k' I  w$ I4 ]3 W  l4 C
void SetHeight(int x){Height=x;}* l, T1 b, T( G
void SetWeight(int y){Weight=y;}  M8 R& j/ t' Y, i  @% H  @. G
private:8 Y8 Q1 G7 j7 Q8 Y, }0 P; a- A0 f" u
int Height;! p6 R2 c: d+ [+ K* G
int Weight;
; n- ?. S8 @: `* m+ F};1 Z- h2 k2 i8 d' v7 X5 t& r: r, n
3 a$ p; f& F5 x! F, n0 m
void main(void)
" m2 V2 F! Q$ ?; x, \{: N; M& ~3 C# S
   Human Lee;; m/ @7 `; x6 m/ L
   Lee.SetHeight(172);
0 N. W" E! i# U# X   cout<<"Lee的身高是:";
, o" k, m- e5 L   Lee.GetHeight();
) x6 }  n- k5 [$ L/ ~& C; }   cout<<endl;
: W8 `3 u5 D0 j$ ^& a; G/ T- N   Lee.SetWeight(120);
; K" C( N4 L, ~& @2 j& H$ z1 P0 I   cout<<"Lee的体重是:";
: {; E7 _( V8 D6 r   Lee.GetWeight();
' P7 g7 z) Y; x, X/ @$ l   cout<<endl;7 }. }, v* h% L+ \- T$ d
}; ]4 |: M" z9 x" }
第二种写法:0 Z4 H' o, Q6 q1 Q
#include <iostream>! o, y2 g' K' W0 e1 N. d3 v
using namespace std;
6 }& U8 H0 N7 R9 t- E' vclass Human$ j4 o! @$ w+ K& J; J( n6 G# V5 J$ Y
{
- G$ J) r: G1 Ypublic:
' L) r: w3 `5 c: u7 ` void GetHeight();  R9 r- n5 n9 X7 A
    void GetWeight();
+ B$ U- v+ l# F$ ~" t; c8 @ void SetHeight(int x);
6 K5 q* ^# K, X# M( n void SetWeight(int y);: [6 F3 `* Y  g$ `+ {
private:
, z% D4 s0 V% L8 z7 H int Height;0 Z5 ?1 f- R( {; F
int Weight;
1 K$ a8 i4 t# j. ~# h$ y: d, m};
( X9 n# q( j$ q( ^* Svoid Human::SetHeight(int x). {7 r4 d3 {- _+ \# Z9 K( ]+ y, q* I1 f$ `
{, p: K, u' }* W$ r
Height=x;
9 _! B% j8 G5 T/ P/ x}/ R+ c/ X: F' O0 _# j
void Human::GetHeight()( ^0 E3 E1 K. H; |5 s
{
! o5 W. g: G4 A$ v) x2 R cout<<Height;" b1 ?/ U- n; @/ f
}! n8 B" c* x9 P, z/ n5 g
void Human::SetWeight(int y)
5 I0 \7 `. A& N& y# K+ M, {{! ~8 x+ Q# n- u/ s2 O8 h
Weight=y;5 B5 H/ C4 W9 n4 G
}
) `9 i" |- n* `; l' J9 @void Human::GetWeight()- Y- V. N0 ?1 |$ F8 m$ p" m
{. G' D5 u( b, ?- t. e9 y& m
cout<<Weight;  x( b- @4 f. W3 ^4 b$ }
}
% F2 c: C4 y0 `' N7 Vvoid main(void)
6 B+ Z* F& ?2 F% a/ Z{& R% @/ m; i/ J* s  \5 ^8 n
   Human Lee;
& Y# e, D# d4 ?# Y' d, S1 O   Lee.SetHeight(172);% Q8 S/ ?, F, M* \
   cout<<"Lee的身高是:";
5 `8 r! B; f5 W2 J7 u   Lee.GetHeight();: m% l/ w7 r0 p* D- j* L& o# A: l; q
   cout<<endl;
; a1 `9 K# Y' `( g4 i1 g   Lee.SetWeight(120);) _0 o/ m* z" N3 k/ h, q% j
   cout<<"Lee的体重是:";
4 @4 }6 h; N" S   Lee.GetWeight();
  t) N6 ?4 x' }: W2 e$ p' L   cout<<endl;
+ M) {4 K( q0 `}
, r. s. j. M; C' W9 h2 @推荐第二种写法
, `. [. n2 C' S% V4 s
, P/ [9 [( U( b& {1 c' E3 R3 i7 h7 M+ u7 V$ S$ t+ G, `
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