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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:
% A! R* C9 C/ [9 ~2 x, E: R#include <iostream>, L& f3 ~2 t2 F! l( x
using namespace std;
. Y" l9 d: c4 ?2 k; g3 a7 pclass Human
# B% y* k0 d* y' [{
, O1 M6 f9 k% h9 W! Qpublic:6 g. E$ d0 |, k& i' F. |
void GetHeight(){cout<<Height;}
0 {/ N4 s' w7 g void GetWeight(){cout<<Weight;}
( M0 t& K8 J  |3 _ void SetHeight(int x){Height=x;}4 s. ?0 P# Z9 T$ J* O% z, x
void SetWeight(int y){Weight=y;}
* |4 r- Q3 o: u- d% }! T5 U9 |private:
. l+ P* |/ k* C+ D" B0 l int Height;
! F* I) p& M1 J& Y: ]6 {- { int Weight;
# n, \! I: M4 J- J};) j. P( \- w+ x* }

: `( f- d7 Q7 c' \/ svoid main(void)& v. ?7 G: i7 Y( u5 |
{% Q" b6 V% m& P8 Z8 m  N' d
   Human Lee;
7 t- f+ a8 |; ~- K* k  G, }7 E$ q   Lee.SetHeight(172);
% @7 M; e6 G0 C6 w   cout<<"Lee的身高是:";
& C$ Z% w9 s. t5 d) O' i   Lee.GetHeight();/ N  u9 t% z4 Q& q5 F
   cout<<endl;
6 [* u# X: w- E! J# e* A   Lee.SetWeight(120);
" C. i" t7 ]4 @5 b$ m* f   cout<<"Lee的体重是:";7 @; _6 r& E4 x: ]7 }
   Lee.GetWeight();% P% V. I  T  j
   cout<<endl;* J! d8 @  c( E
}& ^0 O, a- K: f% `  n$ T' {
第二种写法:1 w* \  T+ q  o# c; M4 D! A7 E
#include <iostream>
; S- m# L" }+ G. o, u- n* ?% a5 rusing namespace std;
- j' `* p8 C, p, w0 Bclass Human3 K1 K3 z5 i" d3 t1 E: t, g: s
{& q5 b& _6 K8 X. p
public:8 Z" `- @6 q/ i& Z3 y
void GetHeight();3 M7 a3 M8 n1 @# B
    void GetWeight();5 b5 h' }  h9 U
void SetHeight(int x);5 s, `# m  v9 l% H- e: q
void SetWeight(int y);$ L- S# W2 a6 J
private:( I% K8 v4 E9 J" g% _9 W7 `/ A3 O
int Height;, Y- \) W  v6 [1 h
int Weight;* ^" V( F* p6 f' C
};" b. m9 B2 D: |; c7 }# E
void Human::SetHeight(int x)7 R+ p1 @9 F8 w
{
; X4 g; k* X1 A Height=x;9 b* K; W" b( A, @
}
6 R- u1 X" T; ~* A: Ivoid Human::GetHeight()
$ ]7 F5 h3 L7 L& Q; E{; C8 j+ y% k. a/ F+ s: X6 n. \( \% X
cout<<Height;
& L3 J% {4 N6 ~/ B9 y0 q' U/ w1 ~4 n}
0 l4 R) M- a# R, r: `void Human::SetWeight(int y)1 X% B9 E9 J+ _) ^$ ?6 B+ ]
{# V" C2 }5 L7 ]! t( _8 _8 o" k
Weight=y;4 x' }4 c4 G6 n! H9 j
}+ ?, ?7 _8 N7 A
void Human::GetWeight()
! ]% e2 U2 _: M- b* z{
3 e/ Q, i& G* ~: _ cout<<Weight;! i* n3 D5 I. Q2 K8 K, T
}
% w6 V+ J+ ^/ kvoid main(void)
* G1 j$ V* _3 F+ o4 B& z3 H. @{
0 v: {+ }& u5 [4 F* x* p   Human Lee;
% X( N% n# C5 O7 R( r" X   Lee.SetHeight(172);
# @1 \& ^0 @" P* P6 K* Q% ?   cout<<"Lee的身高是:";7 R" U4 K5 s. L" R  j$ ?
   Lee.GetHeight();0 h: k( ^0 [9 Q
   cout<<endl;
$ `+ O0 G- |# Z4 _5 [, y- q- g5 [   Lee.SetWeight(120);0 i1 v2 d/ _: t
   cout<<"Lee的体重是:";
2 o8 D! p( R. d: l   Lee.GetWeight();! @1 m( L8 D$ y6 S- a
   cout<<endl;* Q- ~! e4 F, e$ ~( n' b
}
5 O, n: J. A% ~. U8 e; r推荐第二种写法: K$ r* H9 _' }( C- P6 F

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