?1 #pragma?once
?2
?3 class?component
?4 {
?5 public :
?6 ????component(void);
?7 ??virtual?void?printsefl() = 0 ???;
?8 public :
?9 ????virtual?~component(void);
10 };
11
12 class?concreatecom?: public ?component
13 {
14 public :
15 ????concreatecom(char * ?);
16 ??virtual?void?printsefl()???;
17 ??virtual?~concreatecom(void);
18 protected:
19 private :
20 char? * ?_psz_text;
21 };
22
23 class?decorator: public ?component
24 {
25 public :
26 ?????decorator(component & );
27 ??virtual?void?printsefl()?????;
28 ??virtual?~decorator();
29 protected:
30
31 private :
32 ???component? & ?_pcomponent;
33 };
34 class??headdeco: public ?decorator
35 {
36 public :
37 ???????headdeco(component & , int );
38 ???virtual?void?printsefl()???;
39 ???virtual?~headdeco();
40 protected:
41 ????virtual?void?printhead()??;
42 private :
43 int ?_i_head;
44 };
45
46 class?enddeco: public ?decorator
47 {
48 public :
49 ??????enddeco(component & ,char * );
50 ????virtual?void?printsefl()?;
51 ????virtual??~enddeco();
52 protected:
53 ??????virtual?void?printend()?;
54 private :
55 ?char * ?_pch_end;
56 };

?1 #include? " StdAfx.h "
?2 #include? < iostream >
?3 #include? " component.h "
?4 using?namespace?std;
?5
?6 component::component(void)
?7 {
?8 }
?9
10 component::~component(void)
11 {
12 }
13
14 void?concreatecom::printsefl()?
15 {
16 ???cout << endl;
17 ???cout << _psz_text?;
18 ???cout << endl;
19 }
20 ?concreatecom::concreatecom(char * ?psz)
21 {
22 ??????_psz_text = psz;
23 }
24 ?decorator::decorator(component & ?a):
25 ???_pcomponent(a)
26 {
27 ??
28 }
29 concreatecom::~concreatecom()
30 {
31
32 }
33 void?decorator::printsefl()
34 {
35 _pcomponent.printsefl();
36 ????
37 }
38
39 decorator::~decorator()
40 {
41
42 }
43
44 ?headdeco::headdeco(component? & ?refcom,? int ?i):
45 ??decorator(refcom)
46 ?,_i_head(i)
47 {
48
49 }
50 void?headdeco::printsefl()?
51 {?
52 ???printhead();
53 ???decorator::printsefl();
54 ???
55 }
56 void?headdeco::printhead()?
57 {
58 ????cout << endl;
59 ???cout << _i_head;
60 ???cout << endl;
61 }
62 headdeco::~headdeco()
63 {
64 ?
65 }
66
67 enddeco::enddeco(component? & ?refcom,char? * ?pch)
68 :decorator(refcom)
69 ,_pch_end(pch)
70 {
71 ???
72 }
73 void?enddeco::printsefl()?
74 {
75 ????decorator::printsefl();
76 ????printend();
77 }
78 void?enddeco::printend()??
79 {
80 ????cout << endl;
81 ????cout << _pch_end;
82 ????cout << endl;
83 }
84 enddeco::~enddeco()
85 {
86
87 }

?1 // ?decorator.cpp?:?定義控制臺應用程序的入口點。
?2 //
?3
?4 #include? " stdafx.h "
?5 #include? < iostream >
?6 #include? " component.h "
?7 using?namespace?std;
?8
?9 ?void?printmodel(component & ?pcom?)
10 {
11 ????pcom.printsefl();
12 }
13 int ?_tmain( int ?argc,?_TCHAR * ?argv[])
14 {
15 ?????
16 ????printmodel(headdeco(headdeco(enddeco(concreatecom( " 正文輸出中。。。。 " ), " 黃大仙 " ), 2 ), 1 ));
17 ????return? 0 ;
18 }
19