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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:( @: n8 n4 z9 Q- n
#include <iostream>
; p- y% c, O/ i0 D# ^using namespace std;5 G& \7 F5 _8 V  a5 ]6 j
class Human7 Y- n  e5 q4 O
{
% R& e/ Z4 E6 C2 ipublic:( U1 i! F# |' i2 U
void GetHeight(){cout<<Height;}2 P4 {4 d, w5 j, D" ]! O% [
void GetWeight(){cout<<Weight;}: q% }, o; @) l1 E* U6 `8 k
void SetHeight(int x){Height=x;}7 K' Q3 F0 _) r7 @
void SetWeight(int y){Weight=y;}
5 y) G5 A# W7 _0 }private:
% H1 u' l/ q+ l( q int Height;
) m/ I3 d0 |, Z# x- \- O; ^! ~0 q8 x int Weight;4 H, {; f7 T) [. Q. C: f
};
. a6 a! V; h1 b/ C: o# }
, a( @' `( O- J# _void main(void)* B0 S+ B* b! C9 V6 Q
{2 ~6 Y. J! j( i7 L6 q; N7 _6 t
   Human Lee;4 F8 t) Q! \% g3 u. L6 G3 ]
   Lee.SetHeight(172);0 n' R* K  f( \6 H
   cout<<"Lee的身高是:";8 L2 U$ J" U' o: y
   Lee.GetHeight();
, d7 r. V. i6 e# Q) Q) I8 Z; O# ]   cout<<endl;. S: p. y9 W3 O* g* P- ]% t" Q
   Lee.SetWeight(120);
) {& Y$ Q- D8 |, s) Y  Z   cout<<"Lee的体重是:";6 x- r4 Q5 G7 r% w; o( i. N% M" g
   Lee.GetWeight();
0 \7 g, N. _; k   cout<<endl;) s* P# H1 I, h
}) V8 F. T+ k; y
第二种写法:
, y7 p# Z9 T/ |& w; W* Q#include <iostream>
. t! q+ {* T* R- O: A) yusing namespace std;
! B- E# T5 }! x# `$ _class Human
& t& x  A# q. O! p- A{6 C3 C: S$ i- U7 `- T0 j. F% U
public:
& }8 x1 x# u1 Z. p1 ?2 ~ void GetHeight();( d' Y+ l, h2 S: y# K
    void GetWeight();% Y$ G9 K0 d1 C- E
void SetHeight(int x);
) q8 q4 G7 r4 z void SetWeight(int y);
0 O' }3 p' f' r1 _: N- hprivate:
6 z; W4 I0 ]3 p' A* E% \  J; s int Height;
- z4 ]5 w9 K' T int Weight;
* P- f- R, H2 d/ [7 }};& ?8 H+ t' B! l% [5 x" w$ J, f) i
void Human::SetHeight(int x)6 p/ L+ Y  X  Y) S
{. D) X- D- }  n4 h4 x+ v; E' @
Height=x;
0 H) u; p4 Z) H; a7 s6 m9 c: R}
* u2 p7 v6 E0 p6 ^% L# u3 `$ Nvoid Human::GetHeight()- w4 |. z2 ^5 X* w
{
; n9 f5 f' \9 V0 s3 k cout<<Height;. d/ P6 Q# y% B4 ]
}1 x# e. T. J! `8 o. F0 K# C& T0 S
void Human::SetWeight(int y)) A; F" ^) B7 |  L5 a- H
{
" S% _1 L( q3 A! G* F0 q Weight=y;
$ U; g! T) @! M# b% q# }}
1 M$ g" r3 G0 a" O. F2 |* E) avoid Human::GetWeight()  u$ L/ {/ v+ E
{
! J, o- c: y3 L: J. M cout<<Weight;3 R: F4 m. p9 G1 j( ]
}
5 Q/ E1 _* {4 r: z9 n, S! v# \void main(void)
) M% U! {7 y( W/ c) A{
. u' }1 ~/ d# G* K8 P* ~+ e/ ]& S. J   Human Lee;
" V/ Z, T$ P4 I/ l' d9 H* \% E& }   Lee.SetHeight(172);
6 v1 _* V. U/ P- f: B   cout<<"Lee的身高是:";+ z' c& b& a; [  h$ j/ ?2 u
   Lee.GetHeight();
: L7 w6 G! N$ i! F- w   cout<<endl;& y9 m: Q& q& E: P- ^* y% u0 x
   Lee.SetWeight(120);3 y/ }( E1 O6 t( p2 P$ e8 C5 J
   cout<<"Lee的体重是:";6 r9 u/ k" f# X
   Lee.GetWeight();
, w0 Y( m+ H3 d1 m0 m0 e+ J5 Y   cout<<endl;
0 b/ Y4 y% N0 A}
  O+ E# |* X" u% p. ^7 a( Z6 \2 W9 K推荐第二种写法: B% n1 h8 S0 }- f  |

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