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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:- |6 ^1 X9 k9 |  |) f/ w
#include <iostream>& W2 _9 Q; }$ ?
using namespace std;
0 B9 e9 u5 R  H% Zclass Human4 n" T8 |& f% \$ t3 ?% ~3 {, F
{
7 [/ b6 q  h2 Y- u7 P& `! fpublic:
9 S! l: a" c: a void GetHeight(){cout<<Height;}$ M, B9 \2 Q* f
void GetWeight(){cout<<Weight;}+ k/ k0 h: U0 @9 b+ k2 o
void SetHeight(int x){Height=x;}. y* K2 I" E4 ?& M6 k& b
void SetWeight(int y){Weight=y;}
7 s9 x9 x( @; Tprivate:
: ?9 ]2 R5 w$ y9 G4 V. j3 |- P int Height;6 a) r& r  S5 e/ T' _; h
int Weight;
0 Z# E5 n* b) _& a5 A7 |};: }, h0 Z4 K- I* w$ [# }

$ c1 d& @' k9 F& X1 b3 L, Vvoid main(void)
* W& E; c% Q' F9 G1 ~8 H{. ]2 C5 t( L" ?6 B( y
   Human Lee;. Q' S# M1 a! _5 U$ Y+ r- O) y
   Lee.SetHeight(172);: f8 c. w9 V& E3 }% H! L
   cout<<"Lee的身高是:";' q9 |! r" `  }* P# b: V) P! a, p5 X
   Lee.GetHeight();
! B  P+ L+ i( Y3 G   cout<<endl;
+ H: F. Y+ q7 D: [) w: w- T   Lee.SetWeight(120);7 U/ k+ v' C' p' K$ J
   cout<<"Lee的体重是:";. H+ M4 b& ~9 c* Z# p+ b
   Lee.GetWeight();2 s9 X9 c. _3 ?
   cout<<endl;5 ~/ }8 D; ?/ _* d& ~
}
4 j9 L$ B! Y2 ~5 b; A第二种写法:. k6 W: }! I$ ~" N& a
#include <iostream>8 U3 I; m! v2 A9 c
using namespace std;& a+ H- g2 V/ D# {3 o
class Human3 K: p( t, a. r; ^# M4 o$ E. b
{
3 K0 {+ z& J8 W! O- Z" upublic:, N1 T" w$ ^5 ~& l: }$ M
void GetHeight();
  M" B# E/ D1 U& V& Y    void GetWeight();
) n9 m2 l6 p& K4 F void SetHeight(int x);. U0 M$ t0 T2 K1 ~& E3 ~+ M' P
void SetWeight(int y);3 s9 F' Y' n. M7 K4 c+ c! ~
private:
. l3 D* w) Y8 T% q6 j int Height;
  h8 ]2 Y3 I& H int Weight;
0 L" u  Q1 f& L- ~; R};6 {1 E1 N" O$ |' Z% r* V+ R$ q
void Human::SetHeight(int x)" A# B: E, X' @. q; W
{
2 M7 z, V& C9 Q& O: \& H( T Height=x;
( |  s( ]; q) r8 W& z3 q, B}+ ]7 L# h. L& x2 w" \1 l
void Human::GetHeight()
9 F3 O7 Y- |; u; t2 q$ Y/ o: u{
8 \+ D9 ^) F, ?8 o4 U cout<<Height;
5 }+ g# x2 L7 h1 b}
( G) G& c2 y% L( jvoid Human::SetWeight(int y)
8 B: ]) K8 w/ e9 E3 a) v  n{
. X! ^$ C, G) Z0 O5 y5 D& D Weight=y;7 ?3 C" w3 q, P+ G* ~( _$ G, M
}
$ Q1 |# g7 B7 A  W* w0 ]/ A, S4 Dvoid Human::GetWeight()
  F: p. U$ D% _$ ?# E, ?* `{
% ?2 d6 c+ R% e& Q/ g) x& t. Y cout<<Weight;- a& l2 `7 n0 @% D! t; i8 `
}9 Q2 t  G7 {' I- t- B3 H
void main(void)
1 S2 ~3 ^9 k& c, N! F{
% R; l) g* ?. M# N5 z2 Y   Human Lee;$ A; p: P6 T& {" x9 K1 d" |' b4 h
   Lee.SetHeight(172);: q5 |1 P2 x+ X  H7 c
   cout<<"Lee的身高是:";/ [4 J+ j, x8 k
   Lee.GetHeight();8 x, e/ i+ a  f! x4 O' s
   cout<<endl;
5 c+ R7 S' ?6 Z/ o   Lee.SetWeight(120);( H: @2 _9 }- o" ~7 q4 n1 i! C5 u
   cout<<"Lee的体重是:";5 @: B7 h0 B. U3 Q
   Lee.GetWeight();7 W- Z4 [% L# v% e
   cout<<endl;
& n0 E& v+ @1 r7 `4 Q3 z% Z}
7 T2 w# L$ ~4 x# X: Z推荐第二种写法& E: h3 E. V1 m, J- z3 I1 k
7 y: F0 h% D! {4 h# _6 ]4 ~1 U
$ C& [2 k5 Z4 s# D+ t2 \; v0 k! R
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