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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:
! s3 P0 |/ H; D#include <iostream>
" Z. R4 R+ F3 A# n% K% ~/ Dusing namespace std;6 ^9 S7 v9 }' |1 z& }5 v
class Human9 \: a6 M3 e/ b
{& s5 h$ T8 n7 v/ r1 b4 A$ M2 g" U
public:# v- `0 ?9 \# ?9 Y# S* C
void GetHeight(){cout<<Height;}6 Z) w; z2 q. ]% ]
void GetWeight(){cout<<Weight;}
: ^& z2 ^4 Y7 n- T8 R- H* ] void SetHeight(int x){Height=x;}
/ K# T0 p9 w) @0 J' R% f/ y' s void SetWeight(int y){Weight=y;}
% N% C  |$ h5 x, Hprivate:  b* {' v" |, \1 G) t4 ~
int Height;
! \  t8 z, I  b" G int Weight;1 u" F3 i( y- F8 q. G
};& o- G; A/ O4 f: M1 N2 ]% c
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void main(void)
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   Human Lee;
* a3 k2 m* W/ z5 _- I- G* w/ l. w   Lee.SetHeight(172);
4 a1 S6 i! L) d0 S- N   cout<<"Lee的身高是:";; v" B4 I4 `0 D$ ~: q9 e
   Lee.GetHeight();
8 I1 ?) L$ e" e+ k& [, S1 D$ m3 H6 ]1 U   cout<<endl;
9 h. l$ _% a. ?. \* R# d   Lee.SetWeight(120);
4 R5 ~6 |, A# E% b/ w+ _/ Q8 I! R   cout<<"Lee的体重是:";
, l) C' \5 E1 p  \   Lee.GetWeight();( W+ @1 D6 Q5 {! }( S
   cout<<endl;/ ?% Z& M4 c5 F4 k
}
$ m7 k! J: @) m9 _$ p第二种写法:
( P+ H9 M2 r4 ~' O; K#include <iostream>
5 ^1 d8 K* U8 H& ~, e" dusing namespace std;
% Q! _8 x& @5 w, H" Tclass Human4 a6 E4 K  G: q/ F6 }; I2 V
{
5 ~" n3 V  q" p% e1 ]  ~. ]) U3 mpublic:7 k+ s) x  I% j* D/ @% r" K) [
void GetHeight();6 e3 d8 q% Q/ }+ U5 Z
    void GetWeight();( Y/ i* t* v' I  L8 J. N2 N
void SetHeight(int x);
8 h% J1 U3 T6 }( V* e void SetWeight(int y);
3 C6 q; m8 ?) I; [( ]4 hprivate:
8 z' Z& R" Y/ [4 q% n' u int Height;
5 n) {% W  V# ~5 z& k: R" y; Y4 M int Weight;
+ D4 o  O, g1 s* g};
7 O$ w1 |  p; B3 Qvoid Human::SetHeight(int x)$ J/ u, j. A: J: M
{! Z# U- G# |' N2 W. w( L. ^) H
Height=x;9 {) c# T2 N) s7 X* I, C
}: I" S* m; W3 v
void Human::GetHeight()
* K. j% [: l: V) y- r& l( B. B$ y{
, h7 M: J2 F! n) h" T cout<<Height;3 m7 m+ u3 P9 E% b7 \! G
}
0 ^  \3 K- s; u$ U8 F+ u( Yvoid Human::SetWeight(int y)
6 o7 o0 c3 a6 s{
- b7 r, Y; L. |! e' } Weight=y;
1 \: o6 h# X4 E; _8 @+ T! B$ e* P}3 l$ i. ~9 y5 R6 h* z: ?' Z7 b
void Human::GetWeight()
- M; o& G+ \. h8 v  j1 E# t$ {{4 H5 e) M3 l, O( o
cout<<Weight;
+ q* M; B' S5 @}6 @" L7 [+ P0 g2 T8 M
void main(void)
$ F8 d$ k/ U" B$ A% q( c& ~{
4 L% K. Z$ q: {, z+ q   Human Lee;! F7 Y% y. m" n+ o* }0 H& W
   Lee.SetHeight(172);8 Z* |0 y- D) q" F! n
   cout<<"Lee的身高是:";
0 U" b- K& P6 `# F0 v3 O: `   Lee.GetHeight();
3 ?1 E/ B% E- Q2 a! }   cout<<endl;
6 @0 g  V0 A8 k3 L0 [1 }   Lee.SetWeight(120);
; {" W0 s% I# [) ^# Q, ~   cout<<"Lee的体重是:";" N3 u3 r# C+ ]8 q  H7 |: ]( y% X
   Lee.GetWeight();
5 r" H% p% I2 f* H0 ^* D3 s- N   cout<<endl;
& E$ \, @3 e/ ?) k+ @}7 F8 M8 }5 m9 l; }6 h" v
推荐第二种写法
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