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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 Y3 P' y% c$ d' O/ E$ f
#include <iostream>
/ \7 S' A$ n$ ~. F0 Ausing namespace std;! m, E% e5 y+ ]; K
class Human6 V, C; e' N6 E
{
- Q: C' @0 }3 tpublic:
# C  B% m* p3 M/ @ void GetHeight(){cout<<Height;}) ]9 N  o. g2 S6 d2 k! \
void GetWeight(){cout<<Weight;}
2 p7 z* q/ L. W: e# F7 ~7 f void SetHeight(int x){Height=x;}0 F( `, e# `1 C  ?9 S
void SetWeight(int y){Weight=y;}
0 [5 S, {) O7 v$ w. f! F* T4 u* Lprivate:* V0 L( l: [- a$ ~0 d0 l0 T
int Height;1 g- L; P  s: K  X! ~
int Weight;' v, {# j6 e# c' ]0 }2 t: r
};
; Z; S5 M& H$ V4 D$ x4 ~! e) X) T% v. ^
void main(void)
# ?4 @4 A/ z: \9 M{- q+ }2 j) ^9 B1 N$ d% _1 s
   Human Lee;
6 n+ |/ p0 V, _  I% q! J+ A   Lee.SetHeight(172);
- b+ E2 v) {. Q. o; `, z3 f1 p   cout<<"Lee的身高是:";) m: D" D4 @$ k- Q, j( @
   Lee.GetHeight();
, w" @. f: N: ^% N   cout<<endl;' L& N0 P) B$ T* a6 h
   Lee.SetWeight(120);9 m5 x1 C; @7 u6 p* N
   cout<<"Lee的体重是:";
2 H: R- b/ U$ Y7 q$ E1 |+ Y   Lee.GetWeight();$ f& `/ e1 X) g0 T$ z0 ^$ [
   cout<<endl;- `; c. ^, ~" A% k" ~- r
}0 u1 S' ^- {# U# Y2 o/ `; q) g
第二种写法:
& R3 B( k, B4 G2 Y#include <iostream>
' Y% B5 }4 h% f& w; V( m, T6 q* g+ }using namespace std;
3 J2 `4 Z9 [: `' d( B1 L$ D; Z& Z8 f+ r0 Vclass Human$ {3 q: z  q& M! K( Z+ }
{
2 i0 }2 k: X$ q/ ?9 Ppublic:
, {- b9 k0 ?& W: |; ` void GetHeight();6 |7 D3 O) W! {# F9 s/ g
    void GetWeight();
% ]. z. M8 W2 k! L+ f: @0 G void SetHeight(int x);
3 J  f- o% L8 l+ X void SetWeight(int y);
( b0 |8 x- }" G( `7 z! a# Vprivate:
8 I  y7 @3 l$ A- w1 f* ^ int Height;
/ S! i0 a5 c  P' F7 N% \& Q( y4 R int Weight;
' p+ o' _; p; ]1 R) t8 f5 M};
0 g6 ]' `: `; [3 L* N4 `8 {void Human::SetHeight(int x)
. g4 U' Y. D& h. ^/ B6 a, I& V{
- J+ |2 R7 m3 Y3 Z2 v1 F+ Y" ~4 W Height=x;
! H9 t4 c& Z* z8 y7 ?}
5 e/ \- K! _$ t: q7 o& b" f/ a7 svoid Human::GetHeight(): h& F% z- N4 n3 d: T* ?6 V
{# g! t4 Y" \4 s
cout<<Height;* U) C7 o" w' n; p; u  _% A. g
}0 Y1 [9 \" _& D  v1 q: _' }
void Human::SetWeight(int y)
; j+ _" V9 T) l  ^. B0 X{
5 y% M5 n% B/ Y Weight=y;
7 Y; Z7 t- t+ e. M) ]: e3 }0 [}
" b2 U( B$ v  Y7 d, Zvoid Human::GetWeight()* D2 m+ n1 L# J# C* `
{" i, u# Z! ]  B
cout<<Weight;
$ g* v  i+ |# s. E9 c) D' B3 O}
" t; o( i4 O$ ]7 gvoid main(void)
4 o8 W1 S1 h4 {) W9 o{, O, Y6 J* [( k4 c7 _3 ?9 j1 K% M
   Human Lee;
2 b1 A6 J. Q5 B3 o4 p" m   Lee.SetHeight(172);) K: M  a$ M) N* B: _. K/ ~
   cout<<"Lee的身高是:";5 n* `4 _; z' S4 ~  W9 V7 @
   Lee.GetHeight();% d5 J0 ?! k, E% H# X5 P
   cout<<endl;
3 L2 u6 @% M$ s& G( d   Lee.SetWeight(120);) b$ M+ n0 {/ B$ l: }9 d# W1 @5 P
   cout<<"Lee的体重是:";
# L+ ]4 _8 {& K) _+ @   Lee.GetWeight();- E1 `2 |* X  J; b
   cout<<endl;  O- h& V" V1 ~. [& I
}
9 @; [+ }, c% r* s推荐第二种写法0 F  p9 b% Q# l: C6 s# z

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