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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:
" h5 \* N# @8 \1 L#include <iostream>
9 J; n- ~8 R9 ?1 Y: Cusing namespace std;
$ Z% P& P& a2 @7 i$ e$ C" cclass Human: F- w: j+ L  x5 }
{
+ x7 D5 O+ v1 Z7 }% R2 K3 J. Y! bpublic:
3 E& L* [& {0 n, m/ v7 \9 o void GetHeight(){cout<<Height;}8 k4 b' i/ I: ?  N4 H
void GetWeight(){cout<<Weight;}
, C6 @/ M; o, \/ K: R void SetHeight(int x){Height=x;}
( n9 E5 S8 [3 g/ g void SetWeight(int y){Weight=y;}+ v8 @3 U; `9 k  {+ L; o: C
private:& Y- k( e3 _4 D9 ^
int Height;9 O7 n0 @! J# l4 x9 ~6 {
int Weight;
% u. a* o& X. B) g2 g};/ u2 F7 ~; _3 C% K5 @

* h2 O/ l, b7 k" ^9 Q+ J% S8 Zvoid main(void)
3 Y0 w' m! ?- Y; O' l: r{2 Y& C1 I$ c2 \0 a5 Y
   Human Lee;
5 W) U+ l4 A3 l# z" ?9 h! B   Lee.SetHeight(172);
  A, @' b! q3 Z8 F   cout<<"Lee的身高是:";/ h& a9 [( W! V# G- e
   Lee.GetHeight();
  q9 o3 p8 r% R- t  \# |   cout<<endl;4 Z0 O$ a8 O* K" j, t% |/ t/ t
   Lee.SetWeight(120);
6 _  }0 f3 y! W1 g( B3 I- I$ L5 W   cout<<"Lee的体重是:";
. {; g, l/ X2 X1 V5 [2 Y& y   Lee.GetWeight();
7 q0 e! l5 H$ i5 W0 g   cout<<endl;% L# K% g0 N+ h2 L, j" n0 `
}, A% V. T$ ?" @+ u2 C
第二种写法:0 s% |$ c1 E" w
#include <iostream>
# U( y9 ?. ~: d5 s; {5 |8 Uusing namespace std;
, F& }. ?" ^8 M! A1 T4 mclass Human* J4 C0 F4 N8 q
{/ ?1 k4 g9 v# v1 B2 V7 {4 L
public:3 G" U. c$ U+ G3 q7 M1 X
void GetHeight();
) S' n% x* g8 |0 ]  h* B4 `- Y    void GetWeight();
. w$ ?& E1 y$ G4 w" ?6 K void SetHeight(int x);
9 T( ?; U, t2 [* }6 v# \& {% n5 Y2 U! s void SetWeight(int y);
. v0 C" g5 `; h9 B- hprivate:
: V2 B6 ~* ?1 G( L9 N6 y! E0 F; A& [ int Height;
0 Z/ b. x; Z7 g' g0 W) T1 g int Weight;$ s2 C0 U8 Q# @3 b. N
};
- E: v4 j9 c; G6 @. B. Dvoid Human::SetHeight(int x)* i) z  S2 u4 X( `; |' h
{
0 A  D! j6 w% A! N9 J& P  e Height=x;- k8 ~! E3 {* \5 f8 U! j
}
- w( Q% n5 @; P. dvoid Human::GetHeight()7 X& B- z4 V* R+ M. R
{
6 u3 W7 o& m+ ]/ K3 [* o/ p  m cout<<Height;
- M) K* u( v; \. B$ w# r  t}
) i, U& \- M# Z9 a6 Yvoid Human::SetWeight(int y)
2 `. k+ A: G( t8 d. n{
' ^9 c$ @4 G3 V6 b Weight=y;
7 s% a% O- ?' C}. B* |; b0 I, f) J; c% \% [
void Human::GetWeight()
' }9 o# F0 k- {. a{
! z5 R1 X9 |5 g0 ? cout<<Weight;
1 e! v# k& [9 }* o}' H6 X. y: `+ v, B% K/ `! G
void main(void)% W: ~8 \- r' G8 d# R' E: q
{
4 d) w' R6 e! W- ~+ f7 k   Human Lee;
" F; N' \& Y- ?; t7 \   Lee.SetHeight(172);/ l3 \5 d# s9 |3 d4 W1 M
   cout<<"Lee的身高是:";
2 b& c* O- }; X3 n4 V   Lee.GetHeight();
) S% b4 {, b6 Q- A0 Q0 P   cout<<endl;4 @+ Q7 `1 x7 l/ {' X; k; J
   Lee.SetWeight(120);6 m) g- f% O5 S+ H) F  C$ T! k- x7 H; v
   cout<<"Lee的体重是:";
) P) N0 ~- x, g$ {   Lee.GetWeight();+ u% b: y) A/ E; L* `
   cout<<endl;
8 e' Y" i5 ~9 y2 V5 X}( ?! m8 C2 S  r8 H
推荐第二种写法. f5 _! X7 U5 U4 K" J- D7 O( R3 h

8 K1 z6 E3 g# }, U
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