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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 N/ K7 M% ?& P5 F( n
#include <iostream>
: T7 I1 A5 |: I$ u2 I/ C4 Ausing namespace std;: W8 A( t% e# k$ g1 a3 p3 P) j
class Human
8 i9 Y0 |  \* b{
$ T9 P7 N0 s1 G+ @, o1 v( O% Ipublic:4 N4 J/ N/ D2 F. A; Z6 W! l
void GetHeight(){cout<<Height;}4 o0 Q7 \; o- B& p
void GetWeight(){cout<<Weight;}! O" k- x1 k  N. f; W6 h
void SetHeight(int x){Height=x;}
- w$ q, O4 G: j! N  x void SetWeight(int y){Weight=y;}
3 f( Z; H& T1 Bprivate:: [: e9 c3 \' s. L8 m3 J) n, @3 S
int Height;
/ ?: c/ [  h6 W% I7 s6 M int Weight;& z' X% H: o/ i
};, B- j0 k9 B4 {! |! q- W

7 r, r. d5 j4 i  ?! Lvoid main(void)$ @+ P; a* s- G( v1 \* s) k
{6 _8 w+ ?2 t9 J8 V4 h1 ]- E
   Human Lee;
; D/ I# ]( [2 t" G- \& |   Lee.SetHeight(172);" x' B" t9 y( U+ }. x* c- r
   cout<<"Lee的身高是:";
1 S; e8 _' |: F$ `% [, K" C   Lee.GetHeight();! e. m% p7 q" a7 o( U
   cout<<endl;( f& n2 Q# J  S# }5 T6 J! b
   Lee.SetWeight(120);0 U7 s7 j7 d% C$ Z, P' v' z
   cout<<"Lee的体重是:";
. P: M/ B6 ~7 x) A* {6 D- X   Lee.GetWeight();
% L  q1 y# t( Q+ t+ g; d6 C   cout<<endl;( q/ }! }/ I& ~& Q
}) P$ q8 y% D6 |% m7 r- d8 X
第二种写法:
" ^& t7 m" t! @# u' o, |#include <iostream>6 H, b" L  b, G
using namespace std;2 H2 w: o2 w' K- z
class Human. o4 S1 M) o; l+ |# ?: U8 q
{2 D% s5 _- X# |, ^
public:' j; j4 d2 T% C9 m' X/ l
void GetHeight();
& O' u' q' x! m3 }3 T- M: o; a    void GetWeight();
  T+ g  P) q4 J& u0 `3 n* a void SetHeight(int x);' j& P7 D* D. N8 O% _7 ~: b
void SetWeight(int y);& F5 l0 J, E5 S9 ?+ Z! E; z5 X9 G' n
private:* ~- o- [/ @! v% U# V& V& b
int Height;- M" f5 m& e% U' S) L. J
int Weight;
0 q$ [- {+ e4 a$ j* q};
" m3 z- {0 d! Q+ w$ k5 Dvoid Human::SetHeight(int x)4 {: f' u2 n  _" X) f
{
5 ?9 _* X' K) f5 V( Z Height=x;8 b2 X$ N. y& G5 g% ]. {
}
/ V( m+ a6 G0 q; ?void Human::GetHeight()
) t' k+ ^" T! n; Q$ n{
4 v- Q/ O5 H/ g  |, l+ I6 \( e( g cout<<Height;
$ s/ E) |* M1 E, M}
( Y* @2 n; C) i0 R# dvoid Human::SetWeight(int y)1 L) v7 q& _; t! i
{
2 G( o% j. a( ]( h5 B" u3 q Weight=y;
8 b: T7 {! l1 H. u, G}
. O0 w9 C9 M7 g2 Rvoid Human::GetWeight()0 s% a5 Z1 S; |& |/ O9 M/ V
{; B: ?- A! w- Z, R2 D6 [
cout<<Weight;. y& ^$ ]+ K% @5 [. R& n
}
" M! `& |  H5 `9 I3 t; ivoid main(void)2 \% ]* ^& x: \8 U* U4 M
{
7 h  m$ @$ H# \+ W   Human Lee;
) s2 x) c# s# a4 o4 `) _. Y% U7 [3 I   Lee.SetHeight(172);* f8 I- Y6 H# Y0 I, H
   cout<<"Lee的身高是:";
4 c1 t4 c) ?$ |  _   Lee.GetHeight();2 l1 t) X! N' J) L& `( S% z3 e6 G
   cout<<endl;
' c* M# t& @* s7 M  a/ Y/ {, f   Lee.SetWeight(120);) ]$ M/ ]3 V+ o! _& o8 y1 }+ F: I
   cout<<"Lee的体重是:";
( y7 \4 l* L; F   Lee.GetWeight();
( t% B: I! k+ {6 ~   cout<<endl;
8 s3 L+ Y# A0 `- p; a( K5 Q+ e. {}' W; B# p0 t% c# G' v5 J
推荐第二种写法
4 y. e1 A& S* u' P$ K6 o; ^! A6 H& A4 G! y
' a( R4 q2 ]; w! k  j( C* p
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