C++新闻检索类

  1 #include <iostream>
  2 #include <string>
  3 using namespace std;
  4 class Paper {
  5 protected:
  6     int yy, mm, dd;
  7     string unite;
  8     string title;
  9     //there declarations for kinds of news
 10 public:
 11     Paper();
 12     Paper(const Paper &asp);
 13     virtual ~Paper() {}
 14     void SetYMDear(const int year, const int month, const int day);
 15     int GetYear()const;
 16     int GetMonth()const;
 17     int GetDay()const;
 18     string GetTitle()const;
 19     string GetUnite()const;
 20     void SetUnite(const string Unite);
 21     void SetTitle(const string Title);
 22     virtual int CountWords(const string text) = 0;
 23 };
 24 Paper::Paper() :yy(0), mm(0), dd(0), unite("xxx"), title("!!!") {}
 25 Paper::Paper(const Paper &asp) { yy = asp.yy; mm = asp.mm; dd = asp.dd; unite = asp.unite; title = asp.title; }
 26 void Paper::SetYMDear(const int year, const int month, const int day) { yy = year, mm = month, dd = day; }
 27 void Paper::SetTitle(const string Title) { title = Title; }
 28 void Paper::SetUnite(const string Unite) { unite = Unite; }
 29 int Paper::GetDay()const { return dd; }
 30 int Paper::GetYear()const { return yy; }
 31 int Paper::GetMonth()const { return mm; }
 32 string Paper::GetTitle()const { return title; }
 33 string Paper::GetUnite()const { return unite; }
 34 class Word :virtual public Paper {
 35 protected:
 36     string contain;
 37 public:
 38     friend istream& operator >> (istream&, Word&);
 39     friend ostream& operator <<(ostream&, const Word &);
 40     Word();
 41     Word(const string con);
 42     ~Word() {
 43 
 44     }
 45     int CountWords(const string text);
 46 };
 47 istream& operator >> (istream&in, Word&rhp) {
 48     in >> rhp.yy >> rhp.mm >> rhp.dd >> rhp.title >> rhp.unite >> rhp.contain;
 49     return in;
 50 }
 51 ostream& operator <<(ostream&out, const Word &rhp) {
 52     out << rhp.yy << endl
 53         << rhp.mm << endl
 54         << rhp.dd << endl
 55         << rhp.title << endl
 56         << rhp.unite << endl
 57         << rhp.contain << endl;
 58     return out;
 59 }
 60 Word::Word() :contain("xxx") {
 61 
 62 }
 63 Word::Word(const string con) { contain = con; }
 64 int Word::CountWords(const string text) {
 65     int ans = 0;
 66     auto pos = contain.find(text);
 67     while (pos != string::npos) {
 68         ans++;
 69         pos = contain.find(text, ++pos);
 70     }
 71     return ans;
 72 }
 73 class vedio :virtual public Paper {
 74 protected:
 75     string act;
 76     string Vname;
 77 public:
 78     friend istream& operator >> (istream&, vedio&);
 79     friend ostream& operator <<(ostream&, const vedio&);
 80     vedio();
 81     ~vedio() {}
 82     vedio(const string ac, const string vn);
 83     string GetAct()const;
 84     string GetVName()const;
 85     int CountWords(const string text);
 86 };
 87 istream& operator >> (istream&in, vedio&rhp) {
 88     in >> rhp.yy >> rhp.mm >> rhp.dd >> rhp.title >> rhp.unite >> rhp.act >> rhp.Vname;
 89     return in;
 90 }
 91 ostream& operator <<(ostream&out, const vedio &rhp) {
 92     out << rhp.yy << endl
 93         << rhp.mm << endl
 94         << rhp.dd << endl
 95         << rhp.title << endl
 96         << rhp.unite << endl
 97         << rhp.act << endl
 98         << rhp.Vname << endl;
 99     return out;
100 }
101 vedio::vedio() :act("xxx"), Vname("XXXX") {}
102 vedio::vedio(const string ac, const string vn) { act = ac, Vname = vn; }
103 string vedio::GetAct()const { return act; }
104 string vedio::GetVName()const { return Vname; }
105 int vedio::CountWords(const string text) {
106     int ans = 0;
107     int pos = act.find(text);
108     while (pos != string::npos) {
109         ans++;
110         pos = act.find(text, ++pos);
111     }
112     return ans;
113 }
114 class Record :virtual public vedio {
115 protected:
116     string ReName;
117 public:
118     friend istream& operator >> (istream&, Record&);
119     friend ostream& operator <<(ostream&, const Record &);
120     Record();
121     ~Record() {}
122     Record(const string re);
123     int CountWords(const string text);
124 };
125 istream& operator >> (istream&in, Record&rhp) {
126     in >> rhp.yy >> rhp.mm >> rhp.dd >> rhp.title >> rhp.unite >> rhp.act >> rhp.ReName;
127     return in;
128 }
129 ostream& operator <<(ostream&out, const Record &rhp) {
130     out << rhp.yy << endl
131         << rhp.mm << endl
132         << rhp.dd << endl
133         << rhp.title << endl
134         << rhp.unite << endl
135         << rhp.act << endl
136         << rhp.ReName << endl;
137     return out;
138 }
139 Record::Record() :ReName("XXXX") {}
140 Record::Record(const string re) { ReName = re; }
141 int Record::CountWords(const string text) {
142     return vedio::CountWords(text);
143 }
144 class Poem :virtual public Word {
145 public:
146     Poem() {}
147     ~Poem() {}
148     int CountWords(const string text);
149 };
150 int Poem::CountWords(const string text) {
151     int ans = 0;
152     string flag = GetTitle();
153     auto pos = flag.find(text);
154     while (pos != string::npos) {
155         ans++;
156         pos = flag.find(text, ++pos);
157     }
158     return ans;
159 }
160 class Other :virtual public Word {
161 public:
162     Other() {}
163     ~Other() {}
164     int CountWords(const string text);
165 };
166 int Other::CountWords(const string text)
167 {
168     int ans = 0;
169     string flag = GetTitle();
170     auto pos = flag.find(text);
171     while (pos != string::npos) {
172         ans++;
173         pos = flag.find(text, ++pos);
174     }
175     return ans;
176 }
177 
178 int main() {
179     cout << "Please input kinds of News in follow fomat." << endl
180         << "Word or Poem or Other News:" << endl
181         << "Year Month Day Title Unite Contain" << endl
182         << "vedio or Record News:" << endl
183         << "Year Month Day Title Unite Abstract Filename" << endl;
184     Word a1;
185     vedio a2;
186     Record a3;
187     Poem a4;
188     Other a5;
189     string flag;
190     cout << "\nNow Inpt！！\nWord:";
191     cin >> a1;
192     cout << "vedio:";
193     cin >> a2;
194     cout << "Record:";
195     cin >> a3;
196     cout << "Poem:";
197     cin >> a4;
198     cout << "Other:";
199     cin >> a5;
200     cout << "Please enter the word you want to find:";
201     cin >> flag;
202     cout << a1.CountWords(flag) << endl
203          << a2.CountWords(flag) << endl
204          << a3.CountWords(flag) << endl 
205          << a4.CountWords(flag) << endl
206          << a5.CountWords(flag) << endl;
207     return 0;
208 }