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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:
( G6 w9 e4 Z! J* b5 d) P. }#include <iostream>% O8 Y+ b7 [% n  l- c3 E( z2 |
using namespace std;# }2 g7 P8 _) ~' y8 ^/ E4 K
class Human
( v$ x# b$ i" U( o" E, Q{
" X7 ~' }& X1 a$ Jpublic:
# `4 ?, Z0 }, N# a' \3 D0 J1 q void GetHeight(){cout<<Height;}
" z9 B5 c" L' Z1 h( U8 \: }. E9 ] void GetWeight(){cout<<Weight;}5 p) s+ {" Q% B
void SetHeight(int x){Height=x;}' ]0 C1 _8 j0 p
void SetWeight(int y){Weight=y;}) B1 d3 Q- |7 z
private:! M) j3 A6 J" ^/ C* ]
int Height;
# e5 T/ X4 ]. Q. T3 o' v( T int Weight;) ~, f7 I2 `5 i
};
/ V3 u/ p: ~+ }& Z! e  S* z" c; ?' s" \6 c# m9 D) X, y
void main(void)
0 ]0 T/ F2 @0 z* |( @; z{
4 j2 ^+ R# |2 T- f' j! a% |   Human Lee;  q9 z4 G7 O& E, Y% w$ F
   Lee.SetHeight(172);
! |9 i7 A: v+ ], f   cout<<"Lee的身高是:";/ Q$ g1 C+ ]& u# s, n$ `2 i
   Lee.GetHeight();* u% L$ Y1 B# }* u! C1 V
   cout<<endl;
# n) [( y3 l' V' z, S8 ~* z' |' k   Lee.SetWeight(120);
* ^0 V$ c4 [8 W, C$ p   cout<<"Lee的体重是:";! {4 W5 |, E" s* M* a4 i6 S
   Lee.GetWeight();
  A2 ~. h& u2 R; [% G) v6 S* o( T   cout<<endl;
; v2 F. o- D9 x' ?% z7 w}+ \8 s+ c2 _' _/ v' M
第二种写法:. o! Q$ M3 M  k0 U$ W6 ]
#include <iostream># ], e% A  s! I5 Q* N
using namespace std;
* A1 F9 E: y  e5 [* Gclass Human
" R7 `2 x- b0 `& [* k7 w3 X* x{( T2 y0 M8 }1 E# p/ w$ S
public:
9 i+ r8 ~) a- e, \6 |  n+ R void GetHeight();
* ?' S( D: ?$ A3 F) ~  u% C    void GetWeight();8 [/ h: o* s; Q; s6 |
void SetHeight(int x);( I6 X  F" C  E% ~  C
void SetWeight(int y);
6 h* B, C% Q5 R* s% D9 Z  {private:
( J+ E; j* [% H  x  b# a( E int Height;0 z+ B# U# C- c" D- Q
int Weight;
8 w& z3 m( R" J  ?, P) I' f# U};' u4 d# [( y. I
void Human::SetHeight(int x)6 \% _( J+ o  Z% B# k6 r$ l# J/ m
{
5 @! T! n( H2 \3 D$ E Height=x;0 x9 m4 h/ e- D2 W
}
" u  r& c; |; |) f! x4 ^void Human::GetHeight()
& s% T) R% p" [/ s8 Y+ x! ^{8 Q' b0 X5 {% |
cout<<Height;
2 q, ]7 T5 S, n" @4 |- O  [$ z}. Z* P- V% ?) ]( b6 y# P
void Human::SetWeight(int y)
+ m' q! i* j8 U/ Z6 H{
1 U+ i$ }, D+ ?- \( k; K+ ~ Weight=y;6 o+ f/ @, m; o+ i; T
}) g6 w1 K- f: Z$ D  L; R- Q( z$ h
void Human::GetWeight()
9 b7 r: Q+ x7 ^# W* o, Y3 Q{, q; U( a7 C# h  a/ d
cout<<Weight;
3 f; }4 {  a$ |7 k  |' ?* ~}
# Y0 X8 L/ B) J2 Qvoid main(void): V1 V. o# o( t. n
{! z. C% R+ E# \& n4 X% g! C- T
   Human Lee;
! |5 l" w5 ?" J2 q   Lee.SetHeight(172);
. X% a/ }( y8 ^! q   cout<<"Lee的身高是:";
) e1 \4 z( m3 \   Lee.GetHeight();. G3 a, e$ w$ Q! r+ f
   cout<<endl;) M$ h) x* Q, h" k# X$ i6 A
   Lee.SetWeight(120);5 k) D) J  v$ K# w  r) {
   cout<<"Lee的体重是:";+ T/ }* o1 D: Q" H
   Lee.GetWeight();( ^, Q7 p) Q' q1 P: \
   cout<<endl;; |, f% s3 _( U7 w
}
7 r# r6 E, Y9 g# R推荐第二种写法/ ?3 _: v( E+ p+ z
. y( ~& c; C3 P# w+ |
/ j$ D  @& m, X* n
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