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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:
1 I6 e  S/ n. K. H& C#include <iostream>
  J; |1 n4 @& A! P7 D: J; wusing namespace std;
! Y( ?) k1 I/ o- H2 F& J0 s$ Pclass Human3 @. ?- y! H8 i7 i2 [+ v5 H' m
{
9 Q8 S- n: ^& K8 H2 N% F) T; Rpublic:6 ^# ~4 l3 {+ C" _, q( `
void GetHeight(){cout<<Height;}- B4 N7 Z/ T$ j; i) L
void GetWeight(){cout<<Weight;}! h- C4 }4 X- A0 E- T/ B, F
void SetHeight(int x){Height=x;}
9 D0 q* Y! L3 `+ A; F' w! ? void SetWeight(int y){Weight=y;}' O; z- W* G, `9 j% a4 j, G
private:8 n5 ~0 c6 a8 d2 ], j3 h% \
int Height;: S$ N1 X, N5 n2 x
int Weight;
. U: W) S9 u7 C' _2 `" o};
1 Q; R' r* [, w0 F
; p0 V' K7 O) p  Q+ z- `void main(void)% T* {) x2 U& `4 `
{
( _5 `# |1 E/ d5 i% L1 k/ D   Human Lee;
0 Q, G5 L& a: [   Lee.SetHeight(172);3 m" z0 h" F6 p# E
   cout<<"Lee的身高是:";
9 ^" R/ }5 n# i5 A   Lee.GetHeight();
! l! X8 V4 U# F' @  O   cout<<endl;
+ ?$ O. @3 w/ q# u   Lee.SetWeight(120);
2 U. N- X+ m8 D   cout<<"Lee的体重是:";) Q4 A7 e! `2 F+ V( ~0 X
   Lee.GetWeight();: ], A, r* w. `1 k6 _
   cout<<endl;" ?% F7 A! N, F- a
}7 ~2 f, B2 V/ F
第二种写法:" d) |' l* O/ ]$ E2 u
#include <iostream>
- _+ s" j3 W' e# X# V4 V2 k' yusing namespace std;
. M5 C) ]/ E* K+ lclass Human
) i2 K3 G* Y' f/ Y" a9 c1 k{
5 z4 I9 H& ?6 c" F1 lpublic:3 C. n& o) {+ R: _6 U
void GetHeight();
; w( t8 m; {0 i; E0 f    void GetWeight();& U% H( W! O3 q4 x
void SetHeight(int x);8 c; S- w* g- s! w. a
void SetWeight(int y);# P$ `, C- f0 k* q- g
private:
) B2 D( j& U$ w$ |. F  j+ k  g int Height;$ s) q. }. B* c. X( Z9 I
int Weight;6 E' t) ]3 f9 }2 R' B0 i* F4 y
};5 m# ?6 P& J. `$ z
void Human::SetHeight(int x)
$ Q% D' _7 g: a{8 u( H( p1 |" ~" W- S& g# |* ?
Height=x;
/ @+ P3 G8 ^( z4 f& R}: {1 T; H; O9 W! v: v4 i$ {" ~5 G
void Human::GetHeight()
4 Z5 C1 M. C: ]7 W* L' f{
0 ]* C( h  Y1 `1 V5 x2 s cout<<Height;' }3 p0 u" E* Z: H% t# W# _& Z
}
$ Z' V, V7 M& b! L8 j- @: Avoid Human::SetWeight(int y)
' C9 k+ w5 L: _, f( R4 [: s{6 X# v7 k2 r+ N/ U, P4 y' x
Weight=y;
1 S; V' M5 m+ o8 z}
) g& L4 r  C7 p0 X, t4 dvoid Human::GetWeight()7 b2 g$ G2 G* y, G: X0 P
{
, B2 G6 k; [- \) c. i/ e cout<<Weight;; ~; s+ [5 M; c" j5 y% _7 }% N
}
" E% }  I  G& b2 E; B! d! Y- j5 Z0 Bvoid main(void)
: D; F3 V; P( `" c1 o: J{
. R0 `1 V7 [  T; H2 g( s' s7 w5 D' S& t   Human Lee;
, |# _8 d+ T5 j& ^' i   Lee.SetHeight(172);
2 B+ _# G" y7 v$ T. e/ r   cout<<"Lee的身高是:";5 {+ I; A) V6 U/ g
   Lee.GetHeight();
! L7 S. T2 a+ }, I2 h   cout<<endl;/ F( U, A  m7 s( f* H# P4 c# d
   Lee.SetWeight(120);, e% j* v" A- w1 W5 }( X. x! b
   cout<<"Lee的体重是:";- j' N3 j5 k( {9 ?( y& v7 J
   Lee.GetWeight();! Q9 [5 _: _2 Y" f
   cout<<endl;
& R) x. f& K' v9 x}
# l6 t; M% h  t# J推荐第二种写法
; K0 {+ p9 D8 Y* q5 X
1 b3 Y& \1 A0 t
! Y  B  H) A! U4 [0 s% A9 J1 X% }
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