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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:
: O8 m) A2 q9 j, Q3 @6 T# y( m#include <iostream>
' R# \) d/ h  s& _) kusing namespace std;
' c" {& i2 X& _+ E$ tclass Human
% D3 G4 |1 U" |# o8 w0 U  S{0 x6 P" K" z0 X) f& }
public:! d' I/ Z  I9 ?  T6 |
void GetHeight(){cout<<Height;}
- y. x" j$ `5 y* F& L( x void GetWeight(){cout<<Weight;}
# c; y2 @5 j7 W void SetHeight(int x){Height=x;}+ n4 M/ @0 N# _+ M; w
void SetWeight(int y){Weight=y;}* r4 y5 s! z1 `. P& |; v$ Q! M: q
private:& {! ?. e. r, A4 {. L& Q! C
int Height;% V4 U2 }6 R! b, A5 N
int Weight;
: v$ t* v0 b7 C};
$ d4 O! V, v* r* ~" E- T
# u8 H7 a, S6 n  p% H! fvoid main(void)
1 _( d6 w" `. L( [4 K{" g8 ^5 {5 d3 X  J
   Human Lee;* a8 R6 V7 o1 J2 y& E4 a
   Lee.SetHeight(172);
/ E. q  A* @7 ]5 J$ }1 Z   cout<<"Lee的身高是:";8 u$ [7 M/ U% i; t
   Lee.GetHeight();% K% N) Z" b% y6 m" S! d
   cout<<endl;! T4 M) ^" ?1 U4 n5 j; W' m
   Lee.SetWeight(120);
# w# @- D; ^, x% u   cout<<"Lee的体重是:";7 {; q5 x1 B- L7 S$ E8 G
   Lee.GetWeight();: \1 u: N3 f% G6 y( D
   cout<<endl;$ |4 C+ g& E  {
}
- H( t! ~5 O- k$ d- `第二种写法:
3 m7 s0 K, x2 M9 u: g#include <iostream># [- B( y* s4 {; H2 o
using namespace std;% Q3 N8 B/ R; ^9 v
class Human3 p# M: U9 K5 u+ d8 h8 ]5 k
{
: k1 `( j" {& g1 vpublic:
8 i6 U5 i4 b  U2 k% D void GetHeight();
$ x$ B" |0 X4 j8 L0 k* f    void GetWeight();
/ x- j, o% u- P3 f, ^# w9 r2 X void SetHeight(int x);
' k2 v* T! P8 y$ {( y; w void SetWeight(int y);* m6 ^9 J* W7 t
private:
& E3 A' a& ]& h int Height;& y3 N) H5 N- A
int Weight;
: P- Q. |6 W1 P7 E8 P2 g  c};
0 Z; W& X0 U) \+ v3 U0 M$ N$ ovoid Human::SetHeight(int x)
% L9 \  f) |: H/ |- [' R8 v9 ^{1 f; c& X% `. l" k
Height=x;
5 V2 i: [% D3 i  z& C( J}
! g+ d- Z) q/ |& kvoid Human::GetHeight(); D$ i! R2 H3 ]( v; d+ E
{0 C! W0 ?6 j6 Y7 m. R
cout<<Height;3 p! f, P8 F/ g% Z
}
; U' F' a; b, ^* k- [. n8 Uvoid Human::SetWeight(int y)% o5 O( t% f8 \) h" Y* P! }1 n
{
) o( E, D, f( l Weight=y;
% X( E- s, L* n( E( P}: g" F6 B; O% W( i
void Human::GetWeight()/ i" R  f- B8 n
{/ N. ^2 J3 v4 l3 |# P5 W' X
cout<<Weight;
+ G3 P7 i  N3 ~1 X6 c. ?. D$ q}
1 b0 H$ ?& u! E: Avoid main(void)
" R- X% a6 Y  R{
+ g& ], S& O- N   Human Lee;
% ^% p' E4 m: ^; \2 p   Lee.SetHeight(172);
3 e' k7 s0 p) d- g   cout<<"Lee的身高是:";& w6 ^! M) g& C: M2 }7 {
   Lee.GetHeight();
; Q7 C: P* d. B* Y4 Y" K% ?4 f) y   cout<<endl;! z9 @6 J' z  G$ g
   Lee.SetWeight(120);
( `. U" ~) }1 w  s   cout<<"Lee的体重是:";
% o2 _9 q2 ~1 b1 G2 B" V   Lee.GetWeight();8 Y+ J/ L1 J9 x/ g. V( ]! \$ S
   cout<<endl;
1 ~" c3 `% f/ w2 b4 h; V& R}8 O  z9 t8 Z  |2 F
推荐第二种写法5 c8 y9 A  V1 ^8 t' n3 U+ h
5 p3 T( ]1 A9 U+ z. W! O
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