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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:
4 ?0 j/ V7 T* P9 _1 e! n- A! N% ?#include <iostream>, v; r+ R8 i# m6 v
using namespace std;
0 }! f2 L' T5 ~class Human
9 t& Y2 V* t: j3 s/ O6 h$ o5 @{
! W  S3 s9 W6 X: P1 spublic:
7 h1 N4 k, \. n0 K5 { void GetHeight(){cout<<Height;}& y- Z% Q' S, T& a
void GetWeight(){cout<<Weight;}; }- G+ r; c3 z2 N+ b' D  o2 a$ l
void SetHeight(int x){Height=x;}
3 _+ A0 Y: N2 S void SetWeight(int y){Weight=y;}; Z' G& y' w. F, X% |% l/ h
private:  p5 w5 g& g: ]. k& w
int Height;
6 Y8 d! k% Z  o3 N" y int Weight;
  G5 Q' H5 l. \" _9 v+ I" V};
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void main(void)
0 v8 P4 ^  c- C, ?' h{7 r. b- p& k: I7 y0 ^" T# N
   Human Lee;2 \  E& q2 W: C. ^* e- _8 D9 H  J
   Lee.SetHeight(172);
, Q' a% I0 r/ d+ p% p   cout<<"Lee的身高是:";2 E7 F7 X! e" R4 D6 ?' g, S
   Lee.GetHeight();1 _5 e8 j  M, B8 \4 y; T
   cout<<endl;% V3 [. c5 M# [3 \
   Lee.SetWeight(120);
, [6 l9 k+ a- a- _   cout<<"Lee的体重是:";
# I! x! U0 x. p- M& q   Lee.GetWeight();- `$ b+ C, J- ?7 `+ c
   cout<<endl;
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第二种写法:% O5 e3 e6 b' H) g, `2 E3 G$ i. Q
#include <iostream>  [: q5 C* r4 \0 J
using namespace std;
# w7 U4 D8 G7 J; o9 E3 `: Sclass Human# R: C# _3 t6 D# Q* P1 f9 a
{
) y- g) B" k3 P2 _) Z4 ypublic:
' p( g4 N6 y( b6 z void GetHeight();7 e$ N7 t8 Q4 k% V$ r3 ]6 G
    void GetWeight();0 l' {8 U( X- n3 M4 t" V
void SetHeight(int x);
' i) K, s2 G: X! j( R void SetWeight(int y);
3 s8 S; C; G1 ~, M% sprivate:9 Z5 s6 K. l& A
int Height;  q/ y; o. {! x# ?7 D) i3 i
int Weight;
  J; S* L0 X4 j};
7 W" ~' o6 y& p2 Xvoid Human::SetHeight(int x)
) [: f0 V# x7 B{
; \! p1 C+ E) M1 f& V% v Height=x;3 i, X: y) p( L/ u- B
}5 ]2 e! V; m7 l! X" R) \& E. i7 Z
void Human::GetHeight()
; j- a) s6 X) q; h{
( Q8 t0 X; Y$ I' P* y cout<<Height;3 F9 m# g2 T: @, u
}
" ?3 k/ n* Y) g( n& j+ Q& @1 ^2 a6 Rvoid Human::SetWeight(int y)
1 C* T, T* S! J7 }+ z1 ~. H# x{
/ {" d, F7 u3 x( K9 L7 i$ w" u Weight=y;0 D$ n" V& |$ j8 Q
}
$ _% g& G$ K- I7 ^void Human::GetWeight()
8 o" o. k* o! W' N7 M# z& I{
% m6 u5 g% I" D' L! Y cout<<Weight;
% |! G0 H1 u8 r5 N0 ]+ k. a1 f2 i}
, a( y7 J  G+ H& g7 Fvoid main(void); V9 o2 N& ?/ I9 k% X# T; Z
{( C8 {2 _0 H4 k" R1 A/ e
   Human Lee;- Y- b6 m: P7 m" v% w! w9 Y' D
   Lee.SetHeight(172);) l+ S( }) M& {& b0 Y4 A
   cout<<"Lee的身高是:";
* Z- V2 f6 K3 n5 s' t. _0 _   Lee.GetHeight();
1 q: N$ L* }6 |  f' }2 @5 E/ H   cout<<endl;
5 |- \3 F4 n" u- t   Lee.SetWeight(120);( x' F, d- J# r, e- W3 {% a
   cout<<"Lee的体重是:";
: v4 ^! M2 O  J& `) f   Lee.GetWeight();" }/ i: x' J9 |" c8 b8 P
   cout<<endl;
5 n7 U/ k) X6 R2 P5 Q' x5 F}
% z$ t1 [# v- c' K6 Q# t; P推荐第二种写法
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