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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:# L2 z  z- F  t
#include <iostream>
) ~4 [3 I$ \' z5 l+ M7 J; Gusing namespace std;
) L* U2 K$ z; `- A5 @6 |class Human2 e! M( X) n( n7 V
{
( E/ H6 [& i  Zpublic:
2 I0 C' h! k2 W2 E" X8 s# O; D* Q/ n void GetHeight(){cout<<Height;}* m8 ~& g- k0 L8 q, W' w
void GetWeight(){cout<<Weight;}6 _3 `/ b, C; c
void SetHeight(int x){Height=x;}
1 C# a/ B4 I3 `7 M2 @& c- w void SetWeight(int y){Weight=y;}
+ F# G  V9 c. T/ K8 S: |private:
; C8 s8 s) h) |8 c% j int Height;
5 W9 ?9 _+ z0 A% E& A& j int Weight;3 R. B' p" t- ^* A( E
};( n1 i# ]& _) e

6 a# \4 T+ U, Q3 e" |8 V1 qvoid main(void)
2 l! x. G% v5 z9 q7 b{# c) F" e% i, B: ?
   Human Lee;
9 D) j6 I. S- A! B   Lee.SetHeight(172);
- i" M4 J# x" K9 h   cout<<"Lee的身高是:";
7 t4 R1 d  ^  ]5 g# J9 e4 E, M   Lee.GetHeight();
& n6 D; G+ o( s1 T' [   cout<<endl;' R: E# o4 ^3 @+ C: B
   Lee.SetWeight(120);9 P9 ^3 W8 s. A" [( {0 E3 ?. c
   cout<<"Lee的体重是:";; o: v; p# y1 J# e; e: t& a
   Lee.GetWeight();
- t- J' E" ?- V9 R% n   cout<<endl;
; S+ N5 z2 {* v. b" Z! Z}4 R( H$ {: ], n( ]3 v2 P5 r" B
第二种写法:
6 p) p, \) C* L, A* H- A#include <iostream>
+ Q; e2 v) ~$ y6 E8 Yusing namespace std;
1 a0 W' V; k5 g6 N; n; g- U0 r) Zclass Human  A8 L: g; G) w% X
{
- E$ X" h6 K( U" U8 z, g4 Upublic:1 I/ i% y* c( e" S
void GetHeight();7 G7 H5 C; s" X2 _: B  U
    void GetWeight();, S! A6 ~- q9 U/ D) n
void SetHeight(int x);, Q2 T' |- @7 L7 }) s
void SetWeight(int y);
3 s+ D* E/ T# ?. q  Y% Zprivate:6 b) E% y: P4 m3 i- N$ U8 J
int Height;1 d, J; T$ R. g3 a5 z
int Weight;6 }% }" `6 h3 L) a5 M" }
};
2 R: O" t' A7 x, k& y% \1 W6 U- R+ qvoid Human::SetHeight(int x)
  l* I3 `+ W# `( u" A{* y7 i2 U3 ?& i9 z( @  C
Height=x;
& D* c4 `+ o# u( N: k# f1 T}3 R( T# U$ H0 m* |
void Human::GetHeight()& X% M4 I3 D0 V4 \, g8 {
{
: L# Y7 l8 V7 m* p* | cout<<Height;& z4 x. k6 W" x8 h" V5 s, ?' x. @  w
}! s4 C8 |  n9 E- y
void Human::SetWeight(int y)
$ _! `7 @: v+ x- b# B1 k/ h{9 Q' q3 W& J7 I( L
Weight=y;0 V, d4 u7 P4 }/ l8 u
}
0 T3 m& a  R, Uvoid Human::GetWeight()/ a7 M8 F5 Y# S7 S. h- X
{
4 ^0 _- u! y8 z( U cout<<Weight;- T2 \$ `: K( W/ @
}
7 P( [$ d0 v& A* z* c  Kvoid main(void)5 g( i1 m* ^  T  a( w- J
{& h  n6 _2 m  y9 ?. M2 e
   Human Lee;3 m' W  P* o" U- i6 N
   Lee.SetHeight(172);
2 W2 _$ c) @( \   cout<<"Lee的身高是:";
8 `0 X2 u5 u" K- y   Lee.GetHeight();
4 u  Y7 `. d1 u' M8 A. k$ k& x% l   cout<<endl;
5 x% I# u9 y0 b   Lee.SetWeight(120);5 v. B4 N0 O" h( c" Z
   cout<<"Lee的体重是:";2 d0 M/ n. [2 y
   Lee.GetWeight();3 T) z: F* B; g/ R( U
   cout<<endl;
. O! O1 @8 I# o. {  ?; M8 Q6 Z}- w0 r' l" G4 h3 f2 A) k" F
推荐第二种写法$ Y* U5 M: A" o" \% g# A

6 O9 r" c* j1 \5 V2 e, j4 T$ ?/ I. P$ I0 t- h5 e! T. N' {
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