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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:$ I' v+ {9 a4 a& y% G* w1 D* d
#include <iostream>
5 h+ I# t* |3 b! O, i- j2 `" vusing namespace std;5 ~5 Y* r9 Q( T/ ^2 u6 T
class Human7 B, d' Z: \; ?3 e' z$ _
{" i, A5 E" ^+ A# S1 j
public:
" U! q( Z1 H# P, b void GetHeight(){cout<<Height;}
! L) ^7 ]) s% j+ N void GetWeight(){cout<<Weight;}$ ^# l& T! D4 }$ J/ E% w
void SetHeight(int x){Height=x;}# |5 x1 g# f/ q" n# @
void SetWeight(int y){Weight=y;}
3 d9 Z2 U3 i- Dprivate:5 X( `% ~' C" v2 A: c
int Height;
: e( H% D+ d/ i" X! }* ?& b int Weight;
6 d% f' s+ p* z* a};
. g$ s! H' Y6 I7 h
* c/ W* D1 |/ Pvoid main(void)
  L. e1 }; X0 ?2 L* P8 Z{
, O7 k/ ]' ^  }' I- j+ g   Human Lee;3 d. |. H. Q' r7 ?
   Lee.SetHeight(172);; ^, e8 l+ a6 i
   cout<<"Lee的身高是:";
5 ]: v) s5 h8 [0 w; b   Lee.GetHeight();
+ A! g2 ?4 O% }* U   cout<<endl;: @" K) ^/ N* J6 \2 X
   Lee.SetWeight(120);
, D4 p% O& i( `2 q4 L6 O7 G   cout<<"Lee的体重是:";
4 W. V+ \2 q( \) `% a+ e   Lee.GetWeight();
% q& B. R; M5 s, }   cout<<endl;
' \5 ^% X9 W1 x! W7 S/ q}
& C* P4 k& }+ ^) h5 B# G第二种写法:
- A. X! A6 x6 _& ]1 l8 A. B. \#include <iostream>
( ~: v' v! c. {7 G: q2 N7 Wusing namespace std;
& M- O5 T7 z& h0 V. b5 G5 B. \( Mclass Human. L7 O- A2 \: q: F& n7 n/ b
{. O" S' p% X. {7 ]1 B5 i: m9 x
public:
4 t* ~( ^$ B% Z: C% i void GetHeight();% z! R9 q9 W0 S$ t& e0 `
    void GetWeight();9 m9 w3 |4 D1 q* L
void SetHeight(int x);
9 A7 B: [8 J. X$ ? void SetWeight(int y);
1 L8 d2 K% c  F2 i, m; qprivate:$ X! |+ T* ~4 l$ w  r; ~% R
int Height;
  j4 b3 M# b- O5 E4 S int Weight;
8 f# [" Q  e" u: j% s- r1 j};
1 u5 f* P. L* [9 o6 v3 s' bvoid Human::SetHeight(int x)
! X7 }4 H; v8 F) Q' u& L9 m. @{( k9 ]9 F+ x( c1 z4 Z$ a  v% u
Height=x;" M# G% [! Z  p$ m  S, L
}# F1 E* p7 N2 r! {( d
void Human::GetHeight()
1 g0 c# m) B2 E% e5 z+ U! m{
' w% E! E$ Y  i8 r8 y  [ cout<<Height;6 p* W4 a9 \8 E
}
0 N5 m. o9 O0 r5 S6 v9 Wvoid Human::SetWeight(int y)0 Q9 @1 {0 u% A6 t
{
, N0 ?+ Q; _' z, g Weight=y;
* h, L% d* f9 n, n2 ~}: H4 X6 [$ R, q, k
void Human::GetWeight()
5 u3 B7 r& A  g{- j  m- U" ~( |
cout<<Weight;
9 }& I/ B* x) C: u}
5 h1 O3 c7 ]2 z; A2 yvoid main(void): @( G# Y1 O3 U+ U0 F: ~* D
{. j0 i; O* ^. s* H" H9 J" x
   Human Lee;/ @8 K; C+ A3 l9 u! k- x
   Lee.SetHeight(172);
! ?2 B1 ~, |$ m- d$ A# h/ O  C   cout<<"Lee的身高是:";% b; A; Y) d8 @2 c
   Lee.GetHeight();
' Z! c0 l3 {) e/ i. v! P) a% i" f   cout<<endl;. h6 @: P0 e% E; r7 N3 U0 ]
   Lee.SetWeight(120);% V. Q0 P: X( g5 R: z
   cout<<"Lee的体重是:";* U) A& Y; \! z$ v
   Lee.GetWeight();
- w- i5 {$ b9 N8 c0 ]8 l' G   cout<<endl;
4 X0 `- y) r/ t7 ]7 a: E; j8 b}3 Q( p+ U% I7 Z* @
推荐第二种写法
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+ X& d- w4 M; m/ `4 C& o2 D; M5 m- _( z- u
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