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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:
7 F6 F# \( n3 b# S1 v2 A8 v" n#include <iostream>6 j7 p4 t; f* R4 R- o7 f9 \- D) |
using namespace std;4 D' Q5 p/ r. x- d( W
class Human0 C) a$ a+ M* q# e5 o9 i  g
{: u3 |' m5 q) L7 e) }
public:
7 ~  L; D+ s- q4 J( X void GetHeight(){cout<<Height;}
" U4 i9 m" a0 D! P) C3 b" Y void GetWeight(){cout<<Weight;}2 d. h/ R) D' ~  V$ _% V! a
void SetHeight(int x){Height=x;}# }1 A) @& K  o& ]1 [& }# ]2 S
void SetWeight(int y){Weight=y;}2 m1 E1 u' }% N% p( z
private:9 L$ ?  z4 t0 A* k3 a# ?; r7 g
int Height;
9 |2 R$ G8 N( T. k8 R* d int Weight;  k- E9 M/ H1 |' J  f2 \& V( j
};
" T6 D: u1 h' p9 p, |8 D& b1 z" e, C* k: H# g) I% _) W; H: U
void main(void)4 ?, S  d( X" i: m/ Z
{0 f3 `3 q3 T" r6 @" P# e
   Human Lee;
' j2 U# `& N! u6 ]( M- c   Lee.SetHeight(172);! N" T" G8 ^5 I# d0 {5 x* X4 e. z
   cout<<"Lee的身高是:";
! M2 Q; Z0 k; V6 J# d   Lee.GetHeight();
) c" Y; W+ b" b' N   cout<<endl;
3 f& Z9 h7 o8 v7 z   Lee.SetWeight(120);, G" a' [4 o% z5 k2 E& \$ I
   cout<<"Lee的体重是:";; W7 V) B  V& S: A8 w! J
   Lee.GetWeight();  u  ~/ {( d, J: K, y! k& V: _1 F
   cout<<endl;
) k' l8 u* U+ |2 H' W# }}
3 }9 V+ ~5 B% o9 Q, b- G" n8 C" A第二种写法:& T4 y% D5 ?9 ?7 i; ?& N
#include <iostream>
: B( `: h% l- G4 E6 ?using namespace std;
  V7 ?9 o$ C. Y, B+ l5 c# w  u; aclass Human
) p2 H7 Y+ U- @3 m! t{  ?, d. D6 l( l' l+ b. k# f- {1 I
public:
) ?4 ?& _9 k# x2 ?4 Z6 B% G# U void GetHeight();
6 ?: p& W, O5 ?3 q! H: R" J7 o    void GetWeight();
6 R, b3 S! `. W$ ]  V* ?  S0 q+ v void SetHeight(int x);# `: k2 `; }: K" l
void SetWeight(int y);
+ R/ w" _- z9 [  d6 Bprivate:  m, |  P; i6 H0 ]# }
int Height;% ?' v) C- H( E, ^, w" e
int Weight;
; X+ E4 @! z: S; ?  L};
4 j) \: l8 O8 C  I) C+ r: zvoid Human::SetHeight(int x)
. g, v- s3 x. i0 l# t8 D{
" G) C0 k3 k  k1 @: y2 T1 B Height=x;
- W4 [8 Z* b5 g7 D- `0 P* ?}
8 J2 u! L6 F; t1 |6 ~+ ^3 Rvoid Human::GetHeight()
) m! p2 j3 f9 |# }7 Y5 z6 x4 o{
1 r* T3 `& |/ z, r9 m cout<<Height;( c! Y3 o0 A9 S7 _% e+ a
}
8 D( W8 L2 }; z7 r! I. L0 [- f2 I4 B. Lvoid Human::SetWeight(int y)
; m" b; ~" n3 F* }! B) R: X$ g{
# i+ \( S' Y9 q5 _ Weight=y;
+ |2 R+ T" @( f& F2 C% o}5 Y4 \8 j4 L. w( S( w' J" G$ U. n
void Human::GetWeight()5 r8 y# g4 W+ Q& M2 z& r9 s
{* M3 g! `/ z( ^
cout<<Weight;: J2 S! N% F" n* [
}8 e% @; K8 m+ V+ K" ~3 ?, W. ^6 Y0 p
void main(void)
* a6 b- c4 |4 F2 @6 K" I+ N* }( A! b8 k{/ a% L% _' N1 V& w% O1 Z
   Human Lee;
4 O2 ^) _2 n$ u% J   Lee.SetHeight(172);$ Y2 p3 ?# D) h( S9 P/ \
   cout<<"Lee的身高是:";
7 |: C% F0 d, |6 p9 _3 n   Lee.GetHeight();
# J! W9 D1 }& o. x' A   cout<<endl;
, Z9 l" F. n- X8 k   Lee.SetWeight(120);& D' ]$ i0 e. g4 @: O4 l) h' b
   cout<<"Lee的体重是:";
& z  [: `; W- a5 U4 P' {* l   Lee.GetWeight();
8 l, V! c. X! k+ @8 i# }8 ^   cout<<endl;2 V7 p3 N7 @4 d2 F' F/ L
}
: ~+ ~+ j# C. f; r推荐第二种写法# W% |; H7 F  a7 w* s
9 @1 |+ D" T9 y8 t5 E
( j1 X0 o  [/ w" B) X* ~4 o2 F
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