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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:
# ~% w; O7 _5 C) X" d& u#include <iostream>- x7 @- {+ ~2 ?% t' _; A# e
using namespace std;9 K6 Y+ Z% V0 g4 d
class Human4 D1 o7 M, z: ^4 k# A+ O9 P
{2 B1 m9 E6 F7 ]% w$ [, x2 `0 P
public:
) y4 C/ t! d4 f0 g6 a void GetHeight(){cout<<Height;}' K4 i! E- M8 v, t! e9 i# A  ^
void GetWeight(){cout<<Weight;}
* U+ r& _' C% \ void SetHeight(int x){Height=x;}
' Q: ]9 b* X* |/ B, N6 b+ a void SetWeight(int y){Weight=y;}! F! [5 V6 B2 M
private:
* o3 j% L  j& b7 y9 G int Height;. W; `" R' ]5 L2 o' H, n9 n" X
int Weight;- a& r" C% `- i
};9 V- z" r( u! V  G( |7 K' w
  |: f& ]5 C. s5 I
void main(void)
" r! {; y+ b  g. ?{
) S9 K4 T2 g% w  @2 A5 r   Human Lee;
. H6 g* [8 ~/ `  @, A# s, h   Lee.SetHeight(172);. l) U! f: J  M# p2 j$ r: ~
   cout<<"Lee的身高是:";
) T! ?8 {7 T. n0 T3 Z8 R   Lee.GetHeight();/ }+ W7 n, `0 [& S4 ?# m& T& h) _
   cout<<endl;# Z1 I3 o3 G( Z. |- e9 H
   Lee.SetWeight(120);
  b' h8 r. f$ A& e   cout<<"Lee的体重是:";
' \2 V+ L3 c! V5 a3 c" }' z$ i$ K# `   Lee.GetWeight();, ?, _3 k1 j1 y5 x: z. D: @/ s
   cout<<endl;
2 ^3 S: o) E4 A* G}
+ A, I. J# a$ H7 N) n/ r9 u! Z$ @第二种写法:
; n1 q1 N* W& |& h; O$ z7 Q! J2 x#include <iostream>
2 n: }4 i; {: D3 A4 f' }using namespace std;% X7 a% D' m1 x/ }- G( `: J) J
class Human3 Z4 D" H) L1 u8 ?$ n9 W
{
; e4 L4 D! Q2 Z3 kpublic:' Q3 u; p. J) v: m- ?0 ?& J
void GetHeight();
+ z( A6 @$ c: z9 \    void GetWeight();
8 A2 w- m/ l/ W) j3 [ void SetHeight(int x);
) C' H! I7 J  Z, ~ void SetWeight(int y);" W5 ^  K  o* z7 G0 j) R- z
private:0 Q) h; `0 Q2 c; K
int Height;
- x( _; |* O8 I7 w3 H8 b int Weight;
4 Y; i  u" [: }' ~};
4 p) ]3 g6 r7 O, @/ }void Human::SetHeight(int x)
& l( `2 y8 L& K- H# X: V5 r{
+ Z5 \* E, C( l8 u& D( ^% ]% M- q- w Height=x;' @5 w+ |5 H: q) q) L! e
}
/ T3 e6 G4 Z+ m) Pvoid Human::GetHeight()9 Q' I6 }( M& I9 P, d' I& q3 t& k
{
+ {* f6 K0 ^; g. V cout<<Height;# T1 H3 j3 r4 m& {- h$ t
}/ M/ X0 C0 I% e- G
void Human::SetWeight(int y)
' Y; H2 {% X# u{
; ^  R3 o1 |; \  p. s Weight=y;
8 w1 J% B$ U& J# _- R6 U8 ~0 m}
) J6 U+ p) ?% f! A( }, ^3 V& Avoid Human::GetWeight()
, Z5 \4 G! j9 I6 v7 y/ g5 e4 P. d{
! S2 x/ a; W. T+ ^& o cout<<Weight;  @( x! a! Q- m5 h6 j* G
}
2 A# S' Z3 n" rvoid main(void), B6 [9 r$ n" b- N* Z& |+ d
{, F- b. z  c& \- A7 H: H
   Human Lee;: N2 @: a) a- Q: C  ?+ V# X
   Lee.SetHeight(172);
3 ^0 `6 f4 N% r. L$ y, o, o1 j, X   cout<<"Lee的身高是:";
/ H; H; d8 w5 h. L5 \   Lee.GetHeight();- l# @, m. C4 j% M$ `* [
   cout<<endl;- D9 ]! M6 c& ?) }& t' Y+ ]7 I, N
   Lee.SetWeight(120);
7 j+ G9 p( i8 a. T" c; ]   cout<<"Lee的体重是:";
/ h. m  r$ @& u" D( U4 |   Lee.GetWeight();5 U  N) s* @5 a' u* Y& b% H8 q
   cout<<endl;
" B2 \6 _( J$ u6 k3 `) T, ]- ^}
5 b. {1 n: B# s- r& n/ M) ?. ?' S7 C1 S推荐第二种写法
! c6 |# Q' E1 w# \+ J8 x& ^! E0 B8 J$ n! k- F

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