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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 n: |1 E1 n" z8 B) Y#include <iostream>3 H* B9 u; v$ B7 v
using namespace std;
; i: b6 P% G* J8 y1 S4 Mclass Human8 R) B# Y+ C6 n1 S9 W
{
  s7 G6 u" N- tpublic:9 [% v% C8 S1 m0 y
void GetHeight(){cout<<Height;}
0 X: c- e/ B+ p% \ void GetWeight(){cout<<Weight;}: K& g/ {' F2 q3 M' s
void SetHeight(int x){Height=x;}
0 z; u" c) i2 A5 ^& F void SetWeight(int y){Weight=y;}+ X  i2 [( E3 ]+ o# ]4 H: a
private:
9 U. A+ m, u8 H" @ int Height;+ C1 f" E2 _3 {- B+ g% l
int Weight;6 Z4 [9 c' Q! C. n
};, T, J7 w, `4 Q, i1 w

1 u' s; P. S5 ~- I: ?0 kvoid main(void)' {1 q1 R( d& t+ Q8 R+ p
{
  d; [! n  N/ g   Human Lee;
' s* C7 a9 y* Q1 \- j, [9 D   Lee.SetHeight(172);
& Y* Z  N0 N% G' ?' G( @$ {& c/ M   cout<<"Lee的身高是:";
: o0 q7 k- L& W' I   Lee.GetHeight();( f  Z: @+ G% }& {8 c1 u
   cout<<endl;
, C9 o8 T+ O1 w: w; S3 t* p   Lee.SetWeight(120);- S9 k# X. d( R) L/ P9 T3 |$ i
   cout<<"Lee的体重是:";
0 Q/ C- p& [. |   Lee.GetWeight();
7 C) U2 b- M  Z   cout<<endl;
, s+ Q" e* U* J}; \5 ^, r8 Z. B# x* n; H
第二种写法:
$ V1 I. w" S# `7 H#include <iostream>
2 j6 ]3 U/ Y+ j8 \using namespace std;
/ V9 A& S- L  G* Gclass Human0 h) m2 M- K( ~, P: I7 ]9 s; X
{
8 h1 b% I5 }" I- C/ k2 o4 Qpublic:' c! f" S& t) Q
void GetHeight();
. b' C) r, |1 R5 j. J, W    void GetWeight();
' l4 U* Y2 x$ Z9 H+ k% P! ^ void SetHeight(int x);
+ [  [" G- @( n void SetWeight(int y);3 {; h9 l  @, l( H8 S
private:
% E$ d5 Z* M) E( A int Height;; }3 b# E# r! {
int Weight;
, @6 D4 \' r1 D% Z% v1 B};
2 B; S1 Z: `1 d. \void Human::SetHeight(int x)! l$ v; t" C! i% G
{  ~, o4 m1 [& |0 H, V
Height=x;
7 U0 w# `& G; L3 u}& J, Y  y% g6 f8 `2 G, V! t
void Human::GetHeight()
- |5 {+ Q2 ~0 r* X- B* l$ t{3 [/ ?$ e5 r+ {& b  ^5 i
cout<<Height;
% a2 _- l3 K! l6 `% H2 c) H}
7 J6 Z: [. t. Z  @! X! Wvoid Human::SetWeight(int y)* m5 L0 p& b  r8 K1 u
{0 g; W) \% S3 @6 A( E5 Z7 O& w
Weight=y;: m, \. m! x& r) Q
}0 p4 t/ h% i5 k$ L' X" c
void Human::GetWeight()
5 C% E5 U/ @& a% d# l2 ~{, Y, F5 D/ \3 A( Q" B3 D+ W
cout<<Weight;
& M) D5 F) R; o! A- Y3 M}2 g) q. ?  l# v0 k* e, Q9 y9 b4 q
void main(void)
& z. c6 ~/ H- ^: i( U{% h5 D7 D- S% B4 j' o
   Human Lee;- n9 l' d( K2 `, K: B
   Lee.SetHeight(172);4 r- M/ \" u( R1 u, ?4 \( z
   cout<<"Lee的身高是:";
! T9 n) M  j( d! g: }  Q   Lee.GetHeight();1 J0 G! S- |; K5 b4 W
   cout<<endl;8 P& Q1 N: Y6 {2 g3 b# K5 f
   Lee.SetWeight(120);
4 m4 N+ a% t( B( v6 I; \   cout<<"Lee的体重是:";
! r. N% H# w3 b# @' C$ V" t8 Y. V   Lee.GetWeight();4 `& N) R1 q, e
   cout<<endl;% k/ h& k+ |+ O% }+ }# C
}! }: W. m9 j: s
推荐第二种写法% @' z0 \7 K* j1 _  R; A4 i- N6 o
, [  J# d. G2 P3 K6 a

. |% x# {* ^/ \5 v6 D- {: X  B
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