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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:/ v- _& R) R' `$ |4 p9 d
#include <iostream>
. d+ m" L1 e' e$ u# }# Z! x; [9 kusing namespace std;+ C: {! }1 x8 q% a+ I: ?
class Human* J, S; j% s8 a, A2 b8 U6 n
{
6 g, i9 E. N* N' U3 P" ]4 s; Ipublic:
8 }& j; z( c! i8 |9 [* M& X void GetHeight(){cout<<Height;}
4 Y/ b" V/ V6 {0 ?% ^- ~' p void GetWeight(){cout<<Weight;}
& t  T) K+ Y- L void SetHeight(int x){Height=x;}& @# c9 _/ q5 T& |2 s6 B; i
void SetWeight(int y){Weight=y;}
' [- I- J- }# J4 y7 |" v+ uprivate:
1 S, Z' }( w# q' n' L9 w int Height;
/ }2 y' q% ]  J! y/ ? int Weight;4 p. p# J% t% h) e
};# E" J1 t6 a9 |6 K

; G6 @- m1 y. lvoid main(void)/ S2 i8 l5 }) L
{
: O# `, C5 W" ?5 m3 W   Human Lee;0 C2 u# s1 P- E& D+ [
   Lee.SetHeight(172);# t8 v  x0 _% h; N' r( D& J& E
   cout<<"Lee的身高是:";
6 D& U  W: H2 Y; }; f8 O1 |9 h  ~1 s6 w   Lee.GetHeight();8 K9 @3 E4 Y# w; l6 _6 G: Z( G
   cout<<endl;
2 L. M4 a" a9 h   Lee.SetWeight(120);
  ^' K, [# b& U! \- a+ O: S! w7 U' m   cout<<"Lee的体重是:";
5 t# E/ i% p+ m  Q   Lee.GetWeight();
/ o9 U7 M" B8 D% \) H   cout<<endl;
" K6 K5 s) ?7 W1 S}$ \4 k* R, I( r1 s; J1 s
第二种写法:
9 i" @9 h+ Z" ~#include <iostream>
& j  K7 @0 G3 I' d  O: `using namespace std;
. V7 V) |2 D* V  ?: [class Human/ s! c" i" `7 V5 |6 x& @
{
3 l2 ^# T8 w9 h9 @/ kpublic:( ]# V! E9 h/ b9 ~$ q) Y7 X
void GetHeight();
) l. y+ r  ^3 f9 A" J/ l7 x    void GetWeight();) i* M8 a3 r+ V! l5 N
void SetHeight(int x);7 j# `! f! G! L6 C: _4 I
void SetWeight(int y);* a& z  @# ], ]1 t& S9 V. E
private:3 e) W7 r  l& v( t
int Height;
. f1 h9 V' O& \! H! i int Weight;
' x0 g! R- c6 K- j: o* |; J};
6 n% x7 Z- ^; l" O8 }void Human::SetHeight(int x); k( ^# I% Y" M# N/ S, Q- s
{& Z6 z* b2 _9 `
Height=x;
  E1 g6 c# c$ V6 F  `. j3 ~}
* N5 N  k" `- A" wvoid Human::GetHeight()2 C! M6 n- R* ~
{
8 {* p* d7 E9 @* S* H% c/ J3 b) l cout<<Height;: g. s1 r' A' q8 E' @: c
}* O/ c* e' G( k6 d1 p# H$ x4 W7 Y
void Human::SetWeight(int y)# y% s' x2 S9 z* J7 w3 I( }* W2 L
{; O1 ?8 b# `9 L
Weight=y;
+ ^0 F" V5 L2 N; o# D9 L}
+ r! K; w5 g. k" n: X! _void Human::GetWeight()
# O+ j# i. F% {3 ^& b9 g{7 a+ ~9 o; s7 M0 L
cout<<Weight;" `8 V  \9 x2 d! l" Q, K
}9 {& q  r! }/ Z: I3 y
void main(void)3 I. {% A# B8 Z0 c$ C5 \! F
{
2 Z6 N. z/ z& N) V   Human Lee;
. }% ]* V, S6 {   Lee.SetHeight(172);
2 ?# V) u7 b7 b- \1 L   cout<<"Lee的身高是:";
3 w3 g/ C5 f: E0 c   Lee.GetHeight();8 [* O: f, d+ e8 r; U% P
   cout<<endl;; z) e8 Q/ s3 V2 _5 i, v
   Lee.SetWeight(120);( E! D# h  u7 n' V/ w
   cout<<"Lee的体重是:";
1 u7 m3 l* }, U$ P, r' B% r   Lee.GetWeight();
* O, {& V3 o+ w/ W   cout<<endl;
) f3 t$ u$ T: `* q$ q9 T; z' n}
/ }! p6 d7 C$ ]! `% n) ^: a推荐第二种写法2 g6 r8 i$ y- q/ b- U

6 Y0 @4 o0 w% ^! E2 [) H& v# _' z; U& Q) [0 e
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