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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:
9 U9 P; J3 |5 D0 B9 h- K8 m3 G#include <iostream>
) I% Z' D. W$ X' I1 n1 `7 c5 Susing namespace std;
0 f, X6 N+ q  u4 h7 Lclass Human/ ^+ D+ s) |  s+ s# v0 @8 L2 ?
{" V1 a4 ~  k+ Y* W6 W% [; m
public:2 l: O% l+ o# e. b6 @% j$ g
void GetHeight(){cout<<Height;}/ ]+ y0 f, a2 H' g4 {( `
void GetWeight(){cout<<Weight;}
! G" \6 ^- X0 {( c/ y# d4 B void SetHeight(int x){Height=x;}
' s6 ]  m  O3 T' T& q void SetWeight(int y){Weight=y;}. Y( q* g0 r, p% c
private:
6 t2 e- p) \! y3 l' M int Height;
0 @0 }' p( {7 S& u% a& T  F int Weight;( g' Y+ `8 `4 y- v9 B( T' A
};* p0 E1 g1 Q! M( J" \

7 m. M$ K! N6 Ivoid main(void)
1 Z3 o! W" I! V4 Z7 b. Z# @- G/ w{
' K( }- R. r+ m2 k/ ~  u6 S   Human Lee;
; @# E9 p/ f4 A   Lee.SetHeight(172);" l. V- N5 j, i- j
   cout<<"Lee的身高是:";7 m- ?* O6 g( ~% E! ]
   Lee.GetHeight();
: t+ Z3 W* S4 |9 E5 Z/ r+ p1 r   cout<<endl;
- m) u  p2 K) F' S( u   Lee.SetWeight(120);
3 K; d& W- t1 @; B# V- }   cout<<"Lee的体重是:";
4 Q/ j0 j0 t* L   Lee.GetWeight();+ U# @/ _  B" C9 J
   cout<<endl;
+ N4 y; j$ U8 b$ W}
  Z% |2 j9 P2 m2 k; N: L; a8 y  z第二种写法:# {+ O" Q( x4 A* k% H; }
#include <iostream>" q/ W" ?) F9 v
using namespace std;+ ^6 p; h7 d# F4 L4 H$ u) V+ `
class Human8 I. M" |/ O1 e+ t& P4 \4 X6 H/ b, Y
{
7 j4 S' t3 J5 ]7 ]* X0 {public:
& k5 S- d4 s- s/ i! { void GetHeight();
- Y' T  w( V6 H! O& Z/ x* o    void GetWeight();3 G+ L* B8 e* C. `9 k# t' ?$ r
void SetHeight(int x);! u6 h- c& \! l4 |# Q! i
void SetWeight(int y);! b/ f) a. k% J# ?* A
private:
9 e7 I3 i% i8 f int Height;5 e& Q+ [: g/ b4 x& }* l
int Weight;& h* i4 f* e  S; R8 s
};
$ W: b  d/ J" a1 N, n1 y! @void Human::SetHeight(int x)
" C* Z+ d& z5 ]' ~! ^$ w{. o6 N0 T+ L! [8 L5 B( V: X1 t
Height=x;
0 y9 }# t2 V$ e' ?, V' _2 x3 ]2 @}
3 L4 p1 s' z9 k0 Z# j: Hvoid Human::GetHeight()3 ^  M5 }. e' {
{
' J+ s. N# E0 { cout<<Height;
8 j% H; y/ z* W3 X5 X2 [" J}
3 S* R  h4 ~* Gvoid Human::SetWeight(int y)% w3 b0 L( U2 F2 L
{) P' a/ r- Y- k) F- V% ~
Weight=y;
  I" W* e( l1 Y: p9 v0 T- w}
4 v2 ?- K- {# Xvoid Human::GetWeight()
3 S) s5 b: X  W& Z: a4 L{
9 f) E+ V6 ]) N( u cout<<Weight;
7 G4 a1 @* `0 x0 U}
  R; r6 i! B0 O) G+ u8 mvoid main(void)  r- o. c4 Z% a" ^; e; S
{, O' Z" x# B9 U+ v! Y5 e2 C. V7 N
   Human Lee;
, }( @* Q% H  j" l   Lee.SetHeight(172);
5 U! ^& a( v: U2 ~9 j, z# [   cout<<"Lee的身高是:";1 q2 M& S( ~/ c3 L- s6 P3 e+ k: A
   Lee.GetHeight();
, t( u) a- i4 H   cout<<endl;' `+ h  P% M% k* C# g
   Lee.SetWeight(120);$ W1 w8 }6 }3 ^; F9 W, W  a
   cout<<"Lee的体重是:";
# X4 C1 x9 T3 l3 e   Lee.GetWeight();7 R& k/ P8 F& T+ j1 ?
   cout<<endl;
1 E$ L; |" d% X2 b) G1 C}
: j" X7 m( Y' T8 v推荐第二种写法
6 v. f; }9 Z- e. h4 }1 @0 F2 k- i' b( S, R+ q  q( ~

7 B" u1 T8 d; v% V, i
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