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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:
  P0 V! h9 N" d4 o3 i#include <iostream>+ o: K3 ~& S, Z- a$ ~' G
using namespace std;
' s6 [' {9 ]* mclass Human: }' Y" q! g$ t, `2 ]
{
4 t1 p' D$ c  h, z' upublic:' J; q) n; k# ~
void GetHeight(){cout<<Height;}3 t/ d/ y8 K2 A& C" ]0 \
void GetWeight(){cout<<Weight;}
$ T) Z6 X1 O$ v/ U) y- L void SetHeight(int x){Height=x;}
* K! \7 Y, D9 F2 p& L1 Y2 d void SetWeight(int y){Weight=y;}
& k9 I: A" L  }) V0 s0 Zprivate:
( m% c0 b4 `9 J  u5 R int Height;
1 i# ~" u3 e1 k4 R int Weight;: U) y( y+ ^4 a) }  T4 m' k  r4 m* x
};
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void main(void)* K3 y/ V) P  d" h7 X# r3 D
{9 u3 ?. }7 C2 f
   Human Lee;  Q. M% g* _: {1 {+ i7 `; {7 w" g
   Lee.SetHeight(172);
5 c4 |, y( K/ h3 i2 [' g- G( B1 X   cout<<"Lee的身高是:";1 ~+ f: `7 M4 F3 i
   Lee.GetHeight();
% B/ x% J1 O( E& e/ [. E: }7 E9 H   cout<<endl;
. z0 L2 I& x5 I4 s, N+ V   Lee.SetWeight(120);5 I5 r1 O- P% T9 ]$ N
   cout<<"Lee的体重是:";
5 X. N7 j: s9 s8 _* K   Lee.GetWeight();
/ F! W6 X) t+ i. m  W   cout<<endl;0 n; W$ X) v' q9 L
}& Y9 \3 z/ U& ~5 g$ q3 X7 a
第二种写法:. |! C/ m# L1 g% f
#include <iostream>  X% L: q. s$ ]/ |; r! Q8 V4 P# V& d
using namespace std;
% j4 t/ e6 C  X4 fclass Human  Y# j# _+ C; y7 A
{4 V3 N) [% v1 }- D7 d
public:
/ y3 B8 l( Q# X( K0 j6 |  t4 E* C void GetHeight();
* b  M' ^  B& Z6 f    void GetWeight();
8 R9 x( b3 ^* G8 _( `5 M5 u void SetHeight(int x);& }. b$ W0 z- ~6 z. ]$ X) {) V
void SetWeight(int y);0 z4 j1 {' p: N( F
private:$ u( b: ^7 Y: J2 }- o( ~
int Height;
' @+ U: N1 X( ^6 t1 o int Weight;$ J3 N: U- j. M: r3 `2 k- \8 F
};
7 V. t- p5 n& J) Cvoid Human::SetHeight(int x)
1 ^7 m+ n! M. `* S{
& V- F4 @8 ^/ Z* W Height=x;, y7 M% P5 U8 o) x5 t, b
}
, r6 E3 _/ y! v. cvoid Human::GetHeight()0 ^  M: o) t  s. `, g, H" o
{8 |, K% ?0 k) o# [6 n$ Z
cout<<Height;
6 P% T8 S1 k" m}
# u* p: Y# W9 G- Y. _6 dvoid Human::SetWeight(int y)
. v( M# q& L. ], t{
9 I  o% n+ N1 Z, K Weight=y;4 \: M" \% b3 K3 Z  D; ~5 f, p
}
& O; e2 N6 q9 V9 R+ p( D) ?# Q8 }void Human::GetWeight()6 M) i5 D8 B, E) x% O( H2 n+ i& R
{6 w& O/ f, I' z! V0 q( o
cout<<Weight;
( x3 Y) p) E7 E& i}
* U: Y, {! s3 z. V- }void main(void)
5 S: U- D5 N$ K: N! {/ K; q{0 x: Y2 \1 V8 a" X  E
   Human Lee;$ R% R) I& S7 D% c: {
   Lee.SetHeight(172);- w; q! o$ q; c/ @! D: K5 F8 r
   cout<<"Lee的身高是:";/ o! J  Z2 T, L8 r2 e
   Lee.GetHeight();
) V2 j+ a2 a% _7 y   cout<<endl;5 t% H4 o5 e3 W# ]" {
   Lee.SetWeight(120);9 x- }" s: }: ^  N$ R
   cout<<"Lee的体重是:";
8 E* i4 O2 a/ T2 l/ V8 A   Lee.GetWeight();( O( V8 y3 n. z, C% L7 @; A8 n
   cout<<endl;
2 a1 [, g9 D3 a% w, t* z}
* q0 b! P/ Y7 M+ x推荐第二种写法
2 p2 p) u1 P( _9 N) ~4 g
5 A" u! Y: {4 @+ [% C/ Q7 H6 D$ h- A4 _
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