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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:
( U+ o8 e4 N0 Q0 f# l! G$ X/ {#include <iostream>
. V- T/ V3 o/ n# musing namespace std;
" }9 a. @3 j1 }: Q' o5 h) Uclass Human3 U5 r9 @. E) T! C% n+ k
{
2 F1 P$ q/ m7 Tpublic:' f; |1 o+ @! Q+ B
void GetHeight(){cout<<Height;}
* F2 M" m0 [$ L4 x  A: E void GetWeight(){cout<<Weight;}1 K1 o/ v; E$ a2 t
void SetHeight(int x){Height=x;}
, F) r; N! }9 Z5 W void SetWeight(int y){Weight=y;}
4 O' d! `& ]" F1 Rprivate:8 i+ _: o8 N0 H0 E" a9 j
int Height;
- {$ C  b  [% D1 ]- {* j int Weight;
6 S2 H! B! Z6 L: t& l5 I' O};
8 z! d! U* O0 e, H8 C! ^9 Y# v
1 ^1 \5 l1 s6 o; r8 j0 Y7 n. I- Mvoid main(void)9 G. h4 E7 C" l+ D
{) B2 _3 [0 y) b1 [* B
   Human Lee;2 I$ m% r. y: c) z9 N
   Lee.SetHeight(172);
9 V3 g2 Q* P, w7 k( h   cout<<"Lee的身高是:";
; |: ~! D1 o0 g5 o+ ~; j   Lee.GetHeight();
. a' o5 Z/ {2 Z7 b   cout<<endl;
2 Q5 \0 r5 _+ d; p& T  y# Y   Lee.SetWeight(120);
+ G; D5 K. z0 k$ _   cout<<"Lee的体重是:";; w- a1 g" \6 X$ e' L- M% i, N) L$ `
   Lee.GetWeight();
5 \7 y6 ~5 F5 c7 A% J% [7 Z   cout<<endl;( @" \6 \5 @; S4 \: e! a* a
}- I3 \" e  m9 a
第二种写法:- K; C; S5 |8 `" ]/ C& Z
#include <iostream>
  O1 a) ]# |7 `- U& J1 ]6 husing namespace std;$ i! O; ?+ S" T, g  B" \3 T
class Human
) o& }2 l4 b( V{
  h8 z! W% x! B  lpublic:
% D" A- H, d- ^: D( P void GetHeight();8 `4 c( C" L6 v' H; \& i% ~$ B4 x
    void GetWeight();
+ v+ F% q; Q% t2 f6 a2 Z3 r. ~6 E void SetHeight(int x);
6 m: ]8 x, s! L( w5 ~8 A void SetWeight(int y);
, k, y0 q4 V' v& E- ?private:
$ J. E* d: [6 q$ X0 B: m6 ]) s int Height;
8 T5 x) e& N# m' a% ~+ H int Weight;
; O8 n& O1 a0 ]. t2 J- Y};- p1 S& Z9 h3 ~' s) y( O9 W
void Human::SetHeight(int x)
, X& e: u5 j" b  Y. @5 R{# }1 C; z5 E. l* R/ A
Height=x;3 t/ ^7 {- m4 c. y; n8 u5 r
}+ M% k" \% \) e: O8 B
void Human::GetHeight()5 K# t1 m: x) r
{9 f+ W6 [) |% V5 H
cout<<Height;
& X7 ~) M. Y! _# O, G' `0 @+ _& f' D}2 x. L1 u, Y5 J* \  q6 l
void Human::SetWeight(int y)9 k* f( c' M, o0 W
{
0 v; Z" C2 D2 i+ e# D Weight=y;
8 c8 @* `# M/ x6 g}
$ h7 m2 ^. w0 z2 m# G/ Vvoid Human::GetWeight()
/ s, h( w" j" e+ D{: l( ?( ]# k  y2 o! P) ^/ ^
cout<<Weight;
8 G1 C6 O  Y: u( E}
( X1 O1 f8 o1 Y  i1 v% d( ]void main(void), M  s+ w0 ]/ u: m% ]
{  p, W5 }: p8 j# X) h
   Human Lee;
6 `- K' }( D# Q9 [1 i2 K   Lee.SetHeight(172);% r& V) v" V. N6 I6 L/ c: l
   cout<<"Lee的身高是:";+ X6 R6 q4 _& I
   Lee.GetHeight();3 Y* u3 J# b2 j. E' k* b
   cout<<endl;) e/ c) G6 P+ I- ~( \$ L( ?( a( o
   Lee.SetWeight(120);
% ~+ |/ g& o, \, S/ _   cout<<"Lee的体重是:";
- {6 @6 m3 X/ ?( c5 t$ \" H- W   Lee.GetWeight();" K) m7 y7 w! O, R4 f
   cout<<endl;
' ?$ [" U7 K' c9 g( F}" h  d$ _% J. p9 u$ P
推荐第二种写法  W- O& j( J% d9 l
0 w' E2 |+ W3 f. _

' ~* b' @# R2 ~1 r3 J  ?9 A
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