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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 Y4 a3 h8 N$ U* a- a. R% I#include <iostream>& C9 E/ r! v+ s2 w
using namespace std;' C& Q  [2 Y; \3 p9 Y7 d: H5 J
class Human. @+ l# n* T0 M" h& U/ q( t9 u+ U1 m
{" C4 e3 [- v0 v! n
public:
. ]( I' ~3 E1 t' d! j7 Q1 A! v/ p void GetHeight(){cout<<Height;}
" r. E0 \( o  E void GetWeight(){cout<<Weight;}8 l" l- G7 Z: B$ Y0 ]2 I
void SetHeight(int x){Height=x;}
5 W0 l: c( O9 T1 I/ Q2 s/ F2 ? void SetWeight(int y){Weight=y;}
: \9 U7 v7 N- j+ L: {1 n" Rprivate:/ u6 d% R  ]0 ^0 ?( I& ?
int Height;: K6 r% T1 a5 _4 L$ j5 f$ \6 U
int Weight;  ]+ [% M) S) L' }& F7 x% o
};
6 {& E  {: d9 |* {& F; w
* z, A* j7 _9 ^void main(void)  L( Y3 E- b  U# }# m  ~4 p5 m" D
{4 \) V7 {0 l" A7 f3 A# d7 X
   Human Lee;! z- `; W4 H  P0 r
   Lee.SetHeight(172);7 H+ N; j1 ?! k5 G
   cout<<"Lee的身高是:";, ]) @% \5 a: G- Q3 U
   Lee.GetHeight();
6 P  k6 m8 v+ \& I; T% m( H4 i9 X   cout<<endl;
9 [$ j7 L( U3 Y. i3 ~   Lee.SetWeight(120);
$ I' `( ^. r. Z% `/ p2 U( K   cout<<"Lee的体重是:";
: F7 q9 X. b& l1 Q  _7 ?   Lee.GetWeight();" ?$ e+ E; H+ R9 _
   cout<<endl;& B4 Z: N( ]0 L* C7 `+ c- ]  g
}
7 b% |, w/ n( {' B+ ^; `第二种写法:8 L  \3 C% H. E2 ~8 N9 M8 B
#include <iostream>
! g% h6 `7 [/ w6 lusing namespace std;9 F4 V1 K0 o: h6 A" g
class Human
0 z! d- H8 b2 u, i8 o( ~* I{
" A4 p' ~* q0 dpublic:
" }. N# ?1 E8 L: T* s6 d void GetHeight();
, P1 A1 p" m8 m. h+ ?7 v; k9 L    void GetWeight();& Z( Z2 }& A) x2 ?& z
void SetHeight(int x);
, t, x6 a8 L( c) L void SetWeight(int y);8 D/ R2 u- l% O  k0 F& @: g
private:+ V7 F. }& A; l. q
int Height;
! l+ s( v8 d3 U7 L' O- B1 n' y int Weight;0 f8 [  }3 K1 F7 ?$ E! x
};
) ~7 N6 l) R% d; @5 f( E8 l7 F0 i+ bvoid Human::SetHeight(int x)
' I/ Y, `! I* G; u4 D' x{
6 _9 P  ^7 u2 C Height=x;
7 \( C+ d& L2 S2 r8 e% u}. Y2 @$ ~/ z- l/ ^
void Human::GetHeight(). X" L$ g' [2 G# T: s( n
{; ^- a3 L# a) s( I: `9 r5 `
cout<<Height;- X1 B  `$ @6 U% N
}
+ d/ @; \. Z' \" T* M5 Yvoid Human::SetWeight(int y): L1 p: h: |, \
{
9 E/ P/ q& A2 S9 @" y  {( h Weight=y;
' O8 q4 {! G6 B9 b3 E: o6 n}" \' s$ @8 W' t$ l6 u+ p7 E; ]
void Human::GetWeight()
: w, \) i0 H3 [{# w1 j, j. k7 `  @
cout<<Weight;( S. y( \1 ~- k4 M8 H$ O
}
7 N0 C9 o+ |2 K& ?void main(void): |& i6 l& O7 G4 L
{
2 W; L% f0 V+ `; b% M   Human Lee;. N# h% d# l( M5 D# t$ x
   Lee.SetHeight(172);2 d  L; ~' r: K) m
   cout<<"Lee的身高是:";
% m1 c) o8 b& e2 X! a5 P   Lee.GetHeight();
. `9 H/ L/ }6 {$ i. a( v! {: w   cout<<endl;
) y  A  C8 Z3 c, t. H   Lee.SetWeight(120);) K" a6 p6 z" B8 e; \  M4 m
   cout<<"Lee的体重是:";
* w. B; z3 k9 U+ ]0 K, d8 ^   Lee.GetWeight();( j- q2 G/ u% Z! L; M6 C* D: w- ]
   cout<<endl;
7 ~" d4 k( J1 f1 v- W  j}
4 N0 I8 f' W% c9 [推荐第二种写法
5 u4 F0 W! E- c7 F$ T, d( ?+ H) H
8 q& S  O, X& W- J. d1 |' O" z6 x5 Z
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