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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" P5 i- o7 [5 K
#include <iostream>
3 |( w; x+ `5 Wusing namespace std;  `4 T5 F! B  a8 l
class Human
- M# ^: s3 `# G- J- y6 p. H& `{
: c$ F; T$ [3 w2 Apublic:% w+ E# w" G% v8 L
void GetHeight(){cout<<Height;}. \0 j+ m9 }. G7 V3 m
void GetWeight(){cout<<Weight;}
3 O4 ^, d, U+ k: ~; |, \* J9 M void SetHeight(int x){Height=x;}
' [1 O' n& b2 F3 |$ `- W' ^! N void SetWeight(int y){Weight=y;}7 V6 z, U/ k! ?: Z( g1 _; l
private:
5 P% A% w2 N0 D- V' v1 o int Height;5 X6 k% Q9 a" J& O! d2 }5 c
int Weight;
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9 ^6 {, p( j6 j, ~6 o. lvoid main(void)
* G: w. c8 @; K{" ]7 A' f0 G7 P; D' d2 W
   Human Lee;! N& X$ u5 S4 i8 w& \* ^) o: h
   Lee.SetHeight(172);
+ n$ J$ Y  O4 p7 @% R5 ?   cout<<"Lee的身高是:";
- b' z: }9 D/ i7 c* d   Lee.GetHeight();% F" Q) E6 ^, y% q
   cout<<endl;, L& F+ o2 p+ H7 M' ^5 `
   Lee.SetWeight(120);* o4 f! C) ?6 u' b- z
   cout<<"Lee的体重是:";, h7 k7 R( V4 Y5 M( y, C" m+ Y8 b
   Lee.GetWeight();
5 J4 E+ G7 _! P5 I   cout<<endl;
+ ^" ^' _4 D+ Q8 r}4 W5 U! n' u5 c, k# Z5 a# D& M  @5 Z
第二种写法:
0 p- n# F7 E) `; K/ p$ G  g0 h#include <iostream>
  p& {: z3 ]- X$ X" Jusing namespace std;
* n& G( a: r$ D4 i: S: U" hclass Human
$ y6 P5 ~" G  O{
% V# f2 o9 o  u0 p3 lpublic:1 a  [9 }2 [+ j: g0 J/ o6 k
void GetHeight();4 j8 ~' o8 T6 w3 ~
    void GetWeight();
( r% ~. z2 c! g" G' X& O1 |# r void SetHeight(int x);% V( \$ g9 Z3 ?' z: @
void SetWeight(int y);
2 {, Y2 n+ N, W9 ~' e  Wprivate:0 k+ P, k; d/ V/ u& ?, j; `
int Height;
/ j. o) `' T# |( A, p- D int Weight;/ }- I1 B2 ~. f6 s- @' J6 ?$ y. L5 w
};
7 {+ @6 q5 x8 u4 O2 @/ Qvoid Human::SetHeight(int x)) ]+ U' s' A# g& i
{
* R2 L; Q0 |! ~# ^ Height=x;
6 N( }( L5 z1 \$ Y- Y  S}, A4 x3 T% C9 G3 ]0 [4 l9 |2 v
void Human::GetHeight()
) i% n3 c6 `8 T! i4 |{
& h  C4 D% V. \4 J cout<<Height;
! h4 _  _& M" b4 A* I- [4 A}
) w. E/ n5 n0 ~0 ?% B- nvoid Human::SetWeight(int y)1 c. j6 {9 s1 G* J) T
{) ]4 ?; v- @  r8 }7 g0 ]. i
Weight=y;
6 V3 g/ D6 n0 K}, W- r( ~2 ]6 ^1 l) n. u3 c% f
void Human::GetWeight()
+ E! N9 F2 w( |! W1 p: O{
6 \# J. i9 Y. f$ {) y& U cout<<Weight;3 b1 E: H$ b0 o  Y4 A1 Z" Z
}
9 o6 W0 h: \" R3 \! zvoid main(void)* C; i; n" c/ V
{
, k% T+ p; m0 N$ R   Human Lee;$ A5 j5 c8 c! V& {7 ~4 Y
   Lee.SetHeight(172);
8 ?( g7 W; H. X- r' T$ |( s   cout<<"Lee的身高是:";0 O1 O% `& S5 A
   Lee.GetHeight();
1 @7 Z1 n! D' B0 }% [& w   cout<<endl;
, d" d% q. i/ O- z, S3 m   Lee.SetWeight(120);
" {. O8 r+ y3 \5 R0 i2 s# {   cout<<"Lee的体重是:";( ^; a/ J  z, W
   Lee.GetWeight();% [4 |' X. @) d' f: P
   cout<<endl;$ @; b# P' C# R$ W* y0 |
}
: ~0 x8 I- _0 S2 f" ~- f; I推荐第二种写法' [  p, `  J( G! g7 P
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