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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:. P9 Q1 m- w( a4 W9 [
#include <iostream>+ n8 v2 g% F4 _; @2 J
using namespace std;% J. h) t; r. r: Z
class Human
6 q/ x/ b  Q2 {{% ?# {0 @) q2 K* V" d0 W
public:% w3 z2 ~: B2 A1 U& y
void GetHeight(){cout<<Height;}
* f9 x- i2 _3 G8 j% f6 H void GetWeight(){cout<<Weight;}
9 H; Q0 P- h$ B+ D: W; \ void SetHeight(int x){Height=x;}
: h. m. }& b$ |+ ?5 @/ v. n1 ]7 r6 q void SetWeight(int y){Weight=y;}! {: r$ B+ k& w3 \' }. @8 d& j
private:% X! v5 T! ]. [. e2 F8 ?- P: g
int Height;
' ?1 G2 H/ }9 V, ] int Weight;
1 T2 F- _4 Z/ s( l' x};
3 t. }1 p% k9 y# s4 o. A1 ?% \/ k9 I- Q) ^
void main(void)
  I/ ~" G7 W0 {+ v& [8 K" k{+ I, {& T+ S" x
   Human Lee;
# D+ _4 C3 u2 |1 k" m4 W   Lee.SetHeight(172);
" Q3 q0 X: S, ?* Q* J   cout<<"Lee的身高是:";
$ u* d  o( ~2 C* p9 b4 n5 h   Lee.GetHeight();; x; [: D9 x% _0 ~! O' P$ e& X
   cout<<endl;
+ k. n4 {  Q' G   Lee.SetWeight(120);5 K) Y9 ~1 a( A% e; c: g" E! k2 y4 K
   cout<<"Lee的体重是:";4 z& P- e7 g7 d+ Z! v6 D: W8 ~
   Lee.GetWeight();' p. r* I& F& E2 A/ G
   cout<<endl;0 u- k. @! h4 V* X
}
0 G' Q, d7 e. @; C9 r0 P# C. R8 E第二种写法:
1 n6 C3 i8 l* m) S" c3 M, ^#include <iostream># M7 u1 O' j9 m4 \7 x' p( U/ w9 c1 \
using namespace std;0 l6 o" j5 R& b- A. g1 i: L6 F
class Human, {$ T. E4 x4 K+ I8 S
{
5 `# M& }, [: K" @! S, _public:& B  u9 H: |# f( U7 e
void GetHeight();
* S8 m$ o& N4 {6 o! P$ Q- L) }    void GetWeight();
4 M2 L* D! t  C7 y5 S void SetHeight(int x);: v3 N: G% |0 G( \
void SetWeight(int y);
: M; o! y# J  s4 sprivate:
0 @, l, W, A; t! E5 e" _ int Height;
; r1 m1 A: _/ I# O, |; n. z0 k1 W int Weight;( G3 Q8 Q$ ~; t4 a- Q# ~! q- X
};2 M& H3 O4 F5 }
void Human::SetHeight(int x)
' [4 H: J% b; M% q" B1 c% {{
6 C$ i9 h" F! d: T& w Height=x;8 }% n; Z& p& S" _$ H
}
; f$ |* z, Z, Z9 N6 L5 Nvoid Human::GetHeight()8 d: ^1 j) {3 d8 a6 Z" Z  n
{
& L" a6 X' O3 h8 K' r cout<<Height;
: f6 \0 a7 a5 e4 ^" R" I}
, A5 Q0 O( d9 z9 c) m/ Yvoid Human::SetWeight(int y)* E* L1 u5 v0 C/ `6 d/ m% a+ h
{" k* L8 ~. z6 D9 N+ Z; Q
Weight=y;, r) H4 z  c% J0 H
}
: U+ d# K" u1 m9 I, A, Qvoid Human::GetWeight(): |# T; e9 f; M, M' f* K9 N
{
2 R, f) L  y3 [0 p" D  f1 f9 p/ { cout<<Weight;
1 \6 S- @% B* h" Y; q}( W# J$ W- L9 Y2 ?  F8 `0 [7 y- T
void main(void)
. j3 v' [& w$ t1 _6 o{% f. M% e( n& j9 N
   Human Lee;
3 [9 |3 u- y! R( }7 D& s   Lee.SetHeight(172);5 o, G4 j$ C' ^$ e( `0 }
   cout<<"Lee的身高是:";
' `2 S( q$ a4 K2 n" w3 p   Lee.GetHeight();
9 A2 t7 [: i6 f- p$ ]- ~   cout<<endl;: N8 B. a" Q: R
   Lee.SetWeight(120);
( a( Q# [- }) z* [. e   cout<<"Lee的体重是:";
4 U; `4 b3 s2 @   Lee.GetWeight();
1 x. _; g2 {& A6 h/ L   cout<<endl;
- E2 l5 H: G- P, a9 F0 C}
9 j+ |0 Y) Z, K( }4 Y* d  A/ ]3 m& V推荐第二种写法; I& B/ A- S/ `3 i* ?

7 Q. }# ~5 A" w0 n4 L& q5 S+ u  @7 g
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