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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:; N2 G* a9 V% L+ H( X0 B- Y
#include <iostream>
4 L0 m, j# \0 ?/ C3 H( J3 q% Wusing namespace std;, ~6 `" f1 j0 C7 Y" L( Y0 T
class Human: [( P: t7 c9 r! G  t
{' g8 d& |5 U/ r, }# I! X
public:
8 e/ `5 }/ e' _# J# ]" w void GetHeight(){cout<<Height;}% K9 K$ l! ~+ ]
void GetWeight(){cout<<Weight;}0 Y7 C% @9 l  e+ M& @( k9 j
void SetHeight(int x){Height=x;}2 x4 h7 n- W6 _2 z9 j0 g7 ]
void SetWeight(int y){Weight=y;}
& ~( j4 s) [' Z. k( S% I9 J1 r" }1 b* ^private:
$ ?4 _# a# L" s9 O int Height;) u. F: ~' w/ E5 p1 a, ]
int Weight;; [3 B9 e. h. f
};# W" ]0 W# ^7 |) i; Z  ?$ T6 k

0 O0 f. Y7 ^- ~) D7 J5 t3 Fvoid main(void)( }; C# z" ]0 Y, u" k
{
& k; U6 @4 }3 A5 Z1 t5 r. R: ~   Human Lee;
8 z7 L  b7 @+ }; J   Lee.SetHeight(172);  a! E2 S$ D: Q& G
   cout<<"Lee的身高是:";
" _" l% T( _9 N( o   Lee.GetHeight();
/ P% e' W0 {8 i3 \   cout<<endl;' `1 w! |. X# k# V9 W# v
   Lee.SetWeight(120);
; n. x) D7 U/ Z9 H4 R5 `; b- X   cout<<"Lee的体重是:";+ z; f# f# [7 W8 o* j4 Y3 e
   Lee.GetWeight();; A; a* G5 |$ S; G
   cout<<endl;
9 o! U& f& a" L0 y& T' g1 X" x6 n' x}
, _1 I4 u& ^* J& ?第二种写法:9 t" P+ P: |8 X: u3 k2 h& ?
#include <iostream>5 T7 P/ b/ @$ W8 @
using namespace std;) |' }7 T  i1 T! _5 W* s8 a3 I
class Human4 N& ]2 z8 y8 F4 w( G! q
{
0 F, m1 A4 V2 i9 I$ F  a) Ypublic:
6 }* g+ G* W& Z  K# A; B* T& m& t1 M4 { void GetHeight();0 b, H# J" F1 T" V7 w. M( T0 x
    void GetWeight();
" c) e4 n9 g/ F/ R5 m4 u void SetHeight(int x);
9 l' ~- }0 ?1 s, G+ O8 b void SetWeight(int y);: Z) W% G1 R2 E3 w
private:2 z1 O0 {! \. V( @
int Height;
8 J3 i9 B2 L" P' [$ l: K int Weight;
) b0 r4 V% n4 f) |4 {- }, J};% S$ L4 c4 \( s( K( d1 E8 J
void Human::SetHeight(int x)
6 t/ x5 |0 L/ u{! {2 H. O2 F: U/ L
Height=x;* F2 w" C( P' T. I8 c
}
5 H' e$ s" D, hvoid Human::GetHeight()
5 a( [! s# k& d' j{
# [/ X9 _- {2 Z5 W8 l  Z* E  R cout<<Height;8 D8 H9 q% t6 A- q0 B
}
3 M/ H# o) a" S* V  W3 W/ E1 l1 |4 Dvoid Human::SetWeight(int y)  z" z. X5 ?1 z( ]3 s
{
& A5 `% W8 h1 Q& X; t Weight=y;
" I9 |. N; T" N; L' t}
. W0 M! |/ }+ \" G  w' L) _void Human::GetWeight()
! h3 F( g: A# A3 z  m) `8 N( R( t{
/ v7 w! \5 G- O% G* X4 z3 h6 [ cout<<Weight;6 ], q& U4 g0 }5 S: N, A
}
$ ^# i  h8 |2 L' Wvoid main(void)
- P1 r+ I+ i# y+ _{; M/ V2 L9 Q) v# v: C% \
   Human Lee;
( M4 V4 Y3 _* g) [$ w7 ~   Lee.SetHeight(172);
. P3 c% L5 X% u/ l$ C   cout<<"Lee的身高是:";, u  t: F0 s9 Q% }6 h  O
   Lee.GetHeight();
; [+ j; |0 D; T" ~0 m   cout<<endl;
2 {4 X* b* m; i: L   Lee.SetWeight(120);
* x" a, {1 c8 U+ j/ k. O   cout<<"Lee的体重是:";2 `; F# Y/ L/ u: g& q
   Lee.GetWeight();$ D, d7 u* y6 h. M- ~& ~
   cout<<endl;8 x. k+ s, G8 i* Q: ]' k/ Q
}4 F" t3 z/ Y$ r* e- ?  q/ b
推荐第二种写法- P' }& s; h5 N  h+ \( h9 W7 u  ?

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