1 #include "../../st.h"                                         2 class Name_pairs{                                             3 public:                                                       4     void read_names();                                          5     void read_age();                                            6     //void print();                                               7     void sort1();                                               8     vector<string> return_name() const;                       //习题3  9     vector<double> return_age() const;                            //习题3  10 private:                                                     11     vector<string>name;                                        12     vector<double>age;                                         13 };                                                           14                                                              15                                                              16 vector<string> Name_pairs::return_name() const               17 {                                                            18     return name;                                               19 }                                                            20                                                              21 vector<double> Name_pairs::return_age() const                22 {                                                            23     return age;                                                24 }                                                            25                                                              26 void Name_pairs::read_names()                                27 {                                                            28     string s;                                                  29     while(1)                                                   30     {                                                          31         cin>>s;                                                  32         if(s=="over")                                            33             break;                                                 34         name.push_back(s);                                       35                                                              36     }                                                          37 }                                                            38                                                              39 void Name_pairs::read_age()                                  40 {                                                            41     double d;                                                  42     for(int i=0;i<name.size();i++)                             43     {                                                          44         cout<<"input "<<name[i]<<"‘s age:";                      45         cin>>d;                                                  46         age.push_back(d);                                        47     }                                                          48 }                                                            49                                                              50 /*void Name_pairs::print()                                   51 {                                                            52     for(int i=0;i<name.size();i++)                             53         cout<<name[i]<<"   "<<age[i]<<endl;                      54 }*/                                                          55                                                              56 void Name_pairs::sort1()                                     57 {                                                            58     vector<string>name1;                                       59     vector<double>age1;                                        60     name1=name;                                                61     age1=age;                                                  62     sort(name.begin(),name.end());                             63     for(int j=0;j<name.size();j++)                             64     {                                                          65         for(int k=0;k<name.size();k++)                           66         {                                                        67             if(name[j]==name1[k])                                  68                 age1[j]=age[k];                                      69         }                                                        70     }                                                          71     age=age1;                                                  72                                                              73                                                              74 }                                                            75                                                              76 ostream& operator<<(ostream& os,const Name_pairs& np)       //习题3  77 {                                                            78     for(int i=0;i<np.return_name().size();i++)                 79         os<<np.return_name()[i]<<"  "<<np.return_age()[i]<<endl; 80     return os;                                                 81 }                                                            82                                                              83 bool operator==(const Name_pairs&a,const Name_pairs&b)      //习题3  84 {                                                            85     return a.return_name()==b.return_name()                    86         &&a.return_age()==b.return_age();                        87 }                                                            88                                                              89 bool operator!=(const Name_pairs&a,const Name_pairs&b)      //习题3  90 {                                                            91     return !(a==b);                                            92 }                                                            93                                                              94 int main()                                                   95 {                                                            96     Name_pairs np;                                             97     np.read_names();                                           98     np.read_age();                                             99     np.sort1();                                               100     cout<<np;                                                 101     Name_pairs np1;                                           102     np1=np;                                                   103     if(np1==np)                                               104         cout<<"yes"<<endl;                                      105     keep_window_open();                                       106 }     

  1 #include "../../st.h"        2 struct ISBN  3 {  4     int n1,n2,n3;  5     char c;  6       7 };  8   9 istream& operator>>(istream& is,struct ISBN&i) 10 { 11     char c1,c2,c3; 12     is>>i.n1>>c1>>i.n2>>c2>>i.n3>>c3>>i.c; 13     if(!is) 14         return is; 15     if(c1!=‘-‘||c2!=‘-‘||c3!=‘-‘) 16     { 17         is.clear(ios_base::failbit); 18         return is; 19     } 20     return is; 21 } 22  23 bool operator==(const struct ISBN&a,const struct ISBN&b) 24 { 25     return a.n1==b.n1&&a.n2==b.n2&&a.n3==b.n3&&a.c==b.c; 26 } 27  28 ostream& operator<<(ostream& os,struct ISBN&i) 29 { 30     return os<<i.n1<<"-"<<i.n2<<"-"<<i.n3<<"-"<<i.c; 31 } 32  33 struct DATA 34 { 35     int year; 36     int month; 37 }; 38  39 istream& operator>>(istream& is,struct DATA& dd) 40 { 41     char ch; 42     is>>dd.year>>ch>>dd.month; 43     if(!is) 44         return is; 45      46     while(ch!=‘-‘) 47     { 48         //is.clear(ios_base::failbit); 49         cout<<"输入日期错误，重新输入(格式year_month)："; 50         is>>dd.year>>ch>>dd.month; 51         if(!is) 52             return is; 53     } 54     while(dd.month<1||dd.month>12) 55     { 56         cout<<"输入月份错误，重新输入："; 57         is>>dd.month; 58         if(!is) 59             return is; 60     } 61     return is; 62 } 63  64 class BOOK{ 65 public: 66     enum Genre 67     { 68         ficton=1,nonfiction,periodical,biography,children 69     }; 70     BOOK(); 71     struct ISBN re_isbn() {return isbn;}; 72     string re_name(){return name;}; 73     string re_author(){return author;}; 74     struct DATA re_data(){return data;}; 75     char re_is_borrow(){return is_borrow;}; 76     void change_borrow(); 77     void read_book_one(); 78     Genre re_genre(){return genre;}; 79 private: 80     struct ISBN isbn; 81     string name; 82     string author; 83     struct DATA data; 84     char is_borrow; 85     Genre genre; 86 }; 87  88 BOOK::BOOK() 89 { 90     isbn.n1=isbn.n2=isbn.n3=0; 91     isbn.c=0; 92     name=""; 93     author=""; 94     data.year=2001; 95     data.month=1; 96     is_borrow=‘f‘; 97     genre=Genre(1); 98 } 99 100 void BOOK::change_borrow()101 {102     if(is_borrow==‘t‘)103         is_borrow=‘n‘;104     else105         is_borrow=‘t‘;106 }107 108 void BOOK::read_book_one()109 {110     int i;111     cout<<"录入书名：";112     cin>>name;113     cout<<"录入作者：";114     cin>>author;115     cout<<"录入出版日期(year-month)：";116     cin>>data;117     cout<<"录入ISBN号(x-x-x-x)：";118     cin>>isbn;119     cout<<"录入书籍类型(ficton=1,nonfiction=2,periodical=3,biography=4,children=5)：";120     cin>>i;121     genre=Genre(i);122     cout<<"是否已出借(t/f)：";123     cin>>is_borrow;124 }125 126 127 void read_book(vector<BOOK>&book)128 {129     char ch;130     cout<<"是否开始录入书本(y/n)：";131     cin>>ch;132     if(ch==‘n‘)133         return;134     BOOK b;135     int ii=1;136     while(1)137     {138         cout<<"录入书本"<<ii++<<"："<<endl;139         b.read_book_one();140         book.push_back(b);141         cout<<endl;142         cout<<"是否继续录入书本（y/n）：";143         cin>>ch;144         if(ch==‘n‘)145             break;146         cout<<endl;147     }148 149 }150 151 void borrow(string s,vector<BOOK>&book)152 {153     int i;154     for(i=0;i<book.size();i++)155     {156         if(s==book[i].re_name())157         {158             if(book[i].re_is_borrow()==‘t‘)159                 cout<<"sorry,the book is borrowed."<<endl;160             else161             {162                 cout<<"here is the book."<<endl;163                 book[i].change_borrow();164             }165             break;166         }167     }168     if(i==book.size())169         cout<<"sorry,no you want book"<<endl;170 171 }172 173 void return_book(string s,vector<BOOK>&book)174 {175     int i;176     for(i=0;i<book.size();i++)177     {178         if(s==book[i].re_name()){179             cout<<"thank your cooperation."<<endl;180             book[i].change_borrow();181             break;182         }183     }184     if(i==book.size())185         cout<<"sorry,the book not belong to us"<<endl;186 }187 188 bool operator==(BOOK&a,BOOK&b)189 {190     return a.re_isbn()==b.re_isbn();191 }192 193 bool operator!=(BOOK&a,BOOK&b)194 {195     return !(a==b);196 }197 198 ostream& operator<<(ostream& os,BOOK&b)199 {200     os<<endl<<"《"<<b.re_name()<<"》"<<endl<<"anthor: "<<b.re_author()<<endl<<"ISBN号： "<<b.re_isbn()<<endl<<"书籍类型： ";201     switch(b.re_genre()){202     case 1:203         os<<"fiction"<<endl;204         break;205     case 2:206         os<<"nonfiction"<<endl;207         break;208     case 3:209         os<<"periodical"<<endl;210         break;211     case 4:    212         os<<"biography"<<endl;213         break;214     case 5:215         os<<"children"<<endl;216         break;217     }218     return os;219 }220 221 int main()222 {223     vector<BOOK>book;224     read_book(book);225     /*if(book.size()!=0){226         string ss;227         cout<<"borrow book:";228         cin>>ss;229         borrow(ss,book);230         cout<<"return book:";231         cin>>ss;232         return_book(ss,book);233     }*/234     for(int i=0;i<book.size();i++)235         cout<<book[i]<<endl;236     keep_window_open();237 238 239 240 }

  1 ////////////////////////////////////////////////////////////////////////////////  2 //book.h  3   4 #include "../../st.h"        5 struct ISBN  6 {  7     int n1,n2,n3;  8     char c;  9      10 }; 11  12 istream& operator>>(istream& is,struct ISBN&i) 13 { 14     char c1,c2,c3; 15     //is.clear(); 16 //    is.sync(); 17     is>>i.n1>>c1>>i.n2>>c2>>i.n3>>c3>>i.c; 18     if(!is) 19         return is; 20     if(c1!=‘-‘||c2!=‘-‘||c3!=‘-‘) 21     { 22         is.clear(ios_base::failbit); 23         return is; 24     } 25     return is; 26 } 27  28 bool operator==(const struct ISBN&a,const struct ISBN&b) 29 { 30     return a.n1==b.n1&&a.n2==b.n2&&a.n3==b.n3&&a.c==b.c; 31 } 32  33 ostream& operator<<(ostream& os,struct ISBN&i) 34 { 35     return os<<i.n1<<"-"<<i.n2<<"-"<<i.n3<<"-"<<i.c; 36 } 37  38 struct DATE 39 { 40     int year; 41     int month; 42 }; 43  44 istream& operator>>(istream& is,struct DATE& dd) 45 { 46     char ch; 47     //is.clear(); 48     //is.sync(); 49     is>>dd.year>>ch>>dd.month; 50     if(!is) 51         return is; 52      53     while(ch!=‘-‘) 54     { 55         //is.clear(ios_base::failbit); 56         cout<<"输入日期错误，重新输入(格式year_month)："; 57         is>>dd.year>>ch>>dd.month; 58         if(!is) 59             return is; 60     } 61     while(dd.month<1||dd.month>12) 62     { 63         cout<<"输入月份错误，重新输入："; 64         is>>dd.month; 65         if(!is) 66             return is; 67     } 68     return is; 69 } 70  71  72  73 class BOOK{ 74 public: 75     enum Genre 76     { 77         ficton=1,nonfiction,periodical,biography,children 78     }; 79     BOOK(); 80     BOOK(struct ISBN); 81     struct ISBN re_isbn() {return isbn;}; 82     string re_name(){return name;}; 83     string re_author(){return author;}; 84     struct DATE re_date(){return date;}; 85     char re_is_borrow(){return is_borrow;}; 86     void change_borrow(); 87     void read_book_one(); 88     Genre re_genre(){return genre;}; 89  90 private: 91     struct ISBN isbn; 92     string name; 93     string author; 94     struct DATE date; 95     char is_borrow; 96     Genre genre; 97 }; 98  99 BOOK::BOOK()100 {101     isbn.n1=isbn.n2=isbn.n3=0;102     isbn.c=0;103     name="";104     author="";105     date.year=2001;106     date.month=1;107     is_borrow=‘f‘;108     genre=Genre(1);109 }110 111 BOOK::BOOK(struct ISBN is)112 {113     isbn.n1=is.n1;114     isbn.n2=is.n2;115     isbn.n3=is.n3;116     isbn.c=is.c;117     name="";118     author="";119     date.year=2001;120     date.month=1;121     is_borrow=‘f‘;122     genre=Genre(1);123 }124 125 void BOOK::change_borrow()126 {127     if(is_borrow==‘t‘)128         is_borrow=‘n‘;129     else130         is_borrow=‘t‘;131 }132 133 void BOOK::read_book_one()134 {135     int i;136     cout<<"录入书名：";137     cin.clear();138     cin.sync();139     cin>>name;140     cout<<"录入作者：";141     cin.clear();142     cin.sync();143     cin>>author;144     cout<<"录入出版日期(year-month)：";145     cin.clear();146     cin.sync();147     cin>>date;148     cout<<"录入ISBN号(x-x-x-x)：";149     cin.clear();150     cin.sync();151     cin>>isbn;152     cout<<"录入书籍类型(ficton=1,nonfiction=2,periodical=3,biography=4,children=5)：";153     cin.clear();154     cin.sync();155     cin>>i;156     genre=Genre(i);157     cout<<"是否已出借(t/f)：";158     cin.clear();159     cin.sync();160     cin>>is_borrow;161 }162 163 164 void read_book(vector<BOOK>&book)165 {166     char ch;167     cout<<"是否开始录入书本(y/n)：";168     cin>>ch;169     if(ch==‘n‘)170         return;171     BOOK b;172     int ii=1;173     while(1)174     {175         cout<<"录入书本"<<ii++<<"："<<endl;176         b.read_book_one();177         book.push_back(b);178         cout<<endl;179         cout<<"是否继续录入书本（y/n）：";180         cin>>ch;181         if(ch==‘n‘)182             break;183         cout<<endl;184     }185 186 }187 188 void borrow(string s,vector<BOOK>&book)189 {190     int i;191     for(i=0;i<book.size();i++)192     {193         if(s==book[i].re_name())194         {195             if(book[i].re_is_borrow()==‘t‘)196                 cout<<"sorry,the book is borrowed."<<endl;197             else198             {199                 cout<<"here is the book."<<endl;200                 book[i].change_borrow();201             }202             break;203         }204     }205     if(i==book.size())206         cout<<"sorry,no you want book"<<endl;207 208 }209 210 void return_book(string s,vector<BOOK>&book)211 {212     int i;213     for(i=0;i<book.size();i++)214     {215         if(s==book[i].re_name()){216             cout<<"thank your cooperation."<<endl;217             book[i].change_borrow();218             break;219         }220     }221     if(i==book.size())222         cout<<"sorry,the book not belong to us"<<endl;223 }224 225 bool operator==(BOOK&a,BOOK&b)226 {227     return a.re_isbn()==b.re_isbn();228 }229 230 bool operator!=(BOOK&a,BOOK&b)231 {232     return !(a==b);233 }234 235 ostream& operator<<(ostream& os,BOOK&b)236 {237     os<<endl<<"《"<<b.re_name()<<"》"<<endl<<"anthor: "<<b.re_author()<<endl<<"ISBN号： "<<b.re_isbn()<<endl<<"书籍类型： ";238     switch(b.re_genre()){239     case 1:240         os<<"fiction"<<endl;241         break;242     case 2:243         os<<"nonfiction"<<endl;244         break;245     case 3:246         os<<"periodical"<<endl;247         break;248     case 4:    249         os<<"biography"<<endl;250         break;251     case 5:252         os<<"children"<<endl;253         break;254     }255     return os;256 }257 258 259 260 //data.h261 262 #include "../../st.h"263 264 class Date{265 public:266     enum Month{267         Jan=1,Feb,Mar,Apr,May,Jun,Aug,Sep,Oct,Nov,Dec268     };269     class Invalid{};270 271     Date(int y,Month m,int d);272     Date();273     Date(int y,int m,int d);274 275     int day() {return d;};276     Month month() {return m;};277     int year() {return y;};278 279     //void add_day(int n);280     //void add_month(int n);281     //void add_year(int n);282 private:283     int y;284     Month m;285     int d;286 };287 288 289 290 291 292 293 Date& default_date()294 {295     static Date dd(2001,Date::Jan,1);    296     return dd;297 }298 299 Date::Date()300     :y(default_date().year()),m(default_date().month()),d(default_date().day())301 {}302 bool leapyear(int y)303 {304     if((y%4==0&&y%100!=0)||y%400==0)               //习题10305         return true;306     else307         return false;308 }309 bool is_date(int y,Date::Month m,int d)310 {311     if(d<=0)312         return false;313     int days_in_month=31;314     switch(m)315     {316     case Date::Feb:317         days_in_month=(leapyear(y))?29:28;318         break;319     case Date::Apr: case Date::Jun:case Date::Sep:case Date::Nov:320         days_in_month=30;321         break;322     }323     if(days_in_month<d)324         return false;325     return true;326 }327 328 329 330 ostream& operator<<(ostream& os,Date&d)331 {332     return os<<‘(‘<<d.year()<<‘,‘<<d.month()<<‘,‘<<d.day()<<‘)‘;333 }334 335 istream& operator>>(istream& is,Date& dd)336 {337     int y,m,d;338     //char ch1,ch2,ch3,ch4;339     is>>y>>m>>d;340     if(!is)341         return is;342     /*if(ch1!=‘(‘||ch2!=‘,‘||ch3!=‘,‘||ch4!=‘)‘)343     {344         is.clear(ios_base::failbit);345         return is;346     }*/347     return is;348 }349 350 351 Date::Date(int yy,Month mm,int dd)352     :y(yy),m(mm),d(dd)353 {354     if(!is_date(yy,mm,dd))355         throw Invalid();356 }357 358 Date::Date(int yy,int mm,int dd)359     :y(yy),m((Month)mm),d(dd)360 {361     if(!is_date(yy,(Month)mm,dd))362         throw Invalid();363 }364 365 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////366 367 //patron.h368 369 #include "../../st.h"      370 class Patron{371 public:372     string re_name(){return name;}373     string re_number(){return number;}374     double re_expense(){return expense;}375     void set_expense(double d);376     void read_patron_one();377     Patron(string);378     Patron();379 private:380     string name;381     string number;382     double expense;383 };384 385 Patron::Patron()386 {387     name="";388     number="";389     expense=0;390 }391 392 Patron::Patron(string s)393 {394     name="";395     number=s;396     expense=0;397 }398 399 void Patron::set_expense(double d)400 {401     expense=d;402 }403 404 void Patron::read_patron_one()405 {406     cout<<"录入读者姓名：";407     cin>>name;408     cout<<"录入读者图书证号：";409     cin>>number;410     cout<<"录入读者借阅费：";411     cin>>expense;412     while(expense<0)413     {414         cout<<"录入借阅费错误，应>=0，重新录入：";415         cin>>expense;416     }417 }418 419 bool judge_expense(Patron& p)420 {421     if(p.re_expense()>0)422         return false;423     if(p.re_expense()==0)424         return true;425 }426 427 void read_patron(vector<Patron>&patron)428 {429     char ch;430     cout<<"是否开始录入读者数据(y/n)：";431     cin>>ch;432     if(ch==‘n‘)433         return;434     Patron p;435     int ii=1;436     while(1)437     {438         cout<<"录入读者"<<ii++<<"："<<endl;439         p.read_patron_one();440         patron.push_back(p);441         cout<<endl;442         cout<<"是否继续录入读者数据（y/n）：";443         cin>>ch;444         if(ch==‘n‘)445             break;446         cout<<endl;447     }448 449 }450 451 bool operator==(Patron&a,Patron&b)452 {453     return a.re_number()==b.re_number();454 }455 456 bool operator!=(Patron&a,Patron&b)457 {458     return !(a==b);459 }460 461 ostream& operator<<(ostream& os,Patron&p)462 {463     os<<p.re_name()<<"    图书证号："<<p.re_number()<<endl;464     if(judge_expense(p))465         os<<"借阅费："<<p.re_expense()<<endl;466     return os;467 }468 469 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////470 471 //transaction.h472 473 #include "book.h"474 #include "patron.h"475 #include "data.h"476 477 struct Transaction{478     BOOK book;479     Patron patron;480     Date date;481 };482 483 ostream& operator<<(ostream& os,struct Transaction&ts)484 {485     os<<ts.book<<ts.patron<<ts.date<<endl;486     return os;487 }488 489 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////490 491 //library.h492 493 #include "transaction.h"494 495 class Library{496 public:497     vector<BOOK> re_book(){return book;};498     vector<Patron> re_patron(){return patron;};499     vector<struct Transaction> re_transaction(){return transaction;};500     vector<struct Transaction> re_transaction_pf(){return transaction_pf;};501 502     void borrow_book_people(Patron&p,BOOK&b);503     void print_qf();504     void _read_book();505     void _read_patron();506 private:507     vector<BOOK> book;508     vector<Patron> patron;509     vector<struct Transaction> transaction;510     vector<struct Transaction> transaction_pf;511 };512 513 void Library::borrow_book_people(Patron&p,BOOK&b)514 {515     int i;516 517     for(i=0;i<book.size();i++)518     {519         if(b==book[i])520         {521             if(b.re_is_borrow()==true)522                 cout<<"sorry,the book is already borrowed"<<endl;523             else524                 b=book[i];525             break;526         }527     }528     if(i==book.size())529     {530         cout<<"没有这本书籍"<<endl;531         return;532     }533 534     for(i=0;i<patron.size();i++)535         if(p==patron[i])536         {537             p=patron[i];538             break;539         }540     if(i==patron.size())541     {542         cout<<"没有这个读者"<<endl;543         return;544     }545 546 547     548     int a1,b1,c1;549     struct Transaction ts;550     ts.book=b;551     ts.patron=p;552     cout<<"输入今天日期(y m d)："; //若想直接cin>>data,应该需要用友元函数553     cin.clear();554     cin.sync();555     cin>>a1>>b1>>c1;556     ts.date=Date(a1,b1,c1);557 558     if(!judge_expense(p))559     {560         cout<<"该读者已欠费"<<endl;561         transaction_pf.push_back(ts);562     }563     else564     {565         transaction.push_back(ts);566     }567 }568 569 void Library::print_qf()570 {571     for(int i=0;i<transaction_pf.size();i++)572         cout<<transaction_pf[i]<<endl;573 }574 575 void Library::_read_book()576 {577     char ch;578     cout<<"是否开始录入书本(y/n)：";579     cin>>ch;580     if(ch==‘n‘)581         return;582     BOOK b;583     int ii=1;584     while(1)585     {586         cin.clear();587         cin.sync();588         cout<<"录入书本"<<ii++<<"："<<endl;589         b.read_book_one();590         book.push_back(b);591         cout<<endl;592         cin.clear();593         cin.sync();594         cout<<"是否继续录入书本（y/n）：";595         cin>>ch;596         if(ch==‘n‘)597             break;598         cout<<endl;599     }600 }601 602 void Library::_read_patron()603 {604     char ch;605     cout<<"是否开始录入读者数据(y/n)：";606     cin>>ch;607     cin.clear();608     cin.sync();609     if(ch==‘n‘)610         return;611     Patron p;612     int ii=1;613     while(1)614     {615         cout<<"录入读者"<<ii++<<"："<<endl;616         p.read_patron_one();617         patron.push_back(p);618         cout<<endl;619         cin.clear();620         cin.sync();621         cout<<"是否继续录入读者数据（y/n）：";622         cin>>ch;623         if(ch==‘n‘)624             break;625         cout<<endl;626     }627 }628 629 /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////630 631 //main.cpp632 633 #include "library.h"634 #include "../../st.h"635 636 int main()637 {638     Library l;639     static string s;640     static struct ISBN ib;641     l._read_book();642     l._read_patron();643     char ch;644     cout<<"是否进行借书程序(y/n)：";645     cin>>ch;646 647     while(ch!=‘n‘)648     {649         cout<<"输入书籍信息："<<endl;650         cin>>ib;651         static BOOK b(ib);652         cout<<"输入借书人信息："<<endl;653         cin>>s;654         static Patron p(s);655 656         l.borrow_book_people(p,b);657 658         cout<<"是否继续借书程序（y/n）:";659         cin>>ch;660     }661 662     l.print_qf();663     keep_window_open();664 }

 1 #include "../../st.h"       2 class Patron{ 3 public: 4     string re_name(){return name;} 5     string re_number(){return number;} 6     double re_expense(){return expense;} 7     void set_expense(double d); 8  9 private:10     string name;11     string number;12     double expense;13 };14 15 void Patron::set_expense(double d)16 {17     expense=d;18 }19 20 bool judge_expense(Patron p)21 {22     if(p.re_expense()>0)23         return false;24     if(p.re_expense()==0)25         return true;26 }

  1 #include "../../st.h"  2 enum Week{  3         mon=1,tues,wed,thu,fri,sat,sun  4     };  5 enum Month{  6         Jan=1,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec  7     };  8       9 class Date{ 10 public: 11      12  13     class Invalid{}; 14  15     Date(int y,Month m,int d); 16     Date(); 17     Date(int y,int m,int d); 18  19     int day() {return d;} 20     Month month() {return m;} 21     int year() {return y;} 22     Week week() {return w;} 23     Week get_week(); 24     long sun_day(){return l;} 25     friend istream& operator>>(istream& is,Date& dd); 26     void add_day(int n); 27     void add_month(int n); 28     void add_year(int n); 29     void get_date(); 30     long get_sum_day(); 31     int day_sum(); 32 private: 33     int y; 34     Month m; 35     int d; 36     Week w; 37     long l; 38 }; 39  40 Date& default_date() 41 { 42     static Date dd(1970,Jan,1);     43     return dd; 44 } 45  46 Date::Date() 47     :y(default_date().year()),m(default_date().month()),d(default_date().day()) 48 { 49      50 } 51  52 bool leapyear(int y)           //习题10 53 { 54     if((y%4==0&&y%100!=0)||y%400==0) 55         return true; 56     else 57         return false; 58 } 59  60 bool is_date(int y,Month m,int d) 61 { 62     if(d<=0) 63         return false; 64     int days_in_month=31; 65     switch(m) 66     { 67     case Feb: 68         days_in_month=(leapyear(y))?29:28; 69         break; 70     case Apr: case Jun:case Sep:case Nov: 71         days_in_month=30; 72         break; 73     } 74     if(days_in_month<d) 75         return false; 76     return true; 77 } 78  79 void Date::add_year(int n) 80 { 81     y+=n; 82 } 83  84 void Date::add_month(int n) 85 { 86     int i=m; 87     i+=n; 88     while(i>12) 89     { 90         i-=12; 91         add_year(1); 92     } 93     m=(Month)i; 94 } 95  96 void Date::add_day(int n) 97 { 98     int days_in_month; 99     d+=n;100     while(1)101     {102         switch(m)103         {104         case Feb:105             days_in_month=(leapyear(y))?29:28;106             break;107         case Apr: case Jun:case Sep:case Nov:108             days_in_month=30;109             break;110         }111     112         if(d>days_in_month)113         {114             d=d-days_in_month;115             add_month(1);116         }117         else{118             w=get_week();119             l+=n;120             break;121         }122     }123 124 }125 126 ostream& operator<<(ostream& os,Date&d)127 {128     return os<<‘(‘<<d.year()<<‘,‘<<d.month()<<‘,‘<<d.day()<<‘)‘<<"--"<<d.sun_day()<<endl;129 }130 131 Week Date::get_week()132 {133     int y1,m1,c1,d1;134     if(m==1||m==2)135     {136         m1=12+m;137         y1=(y-1)%100;138         c1=(y-1)/100;139         d1=d;140     }141     else142     {143         m1=m;144         y1=y%100;145         c1=y/100;146         d1=d;147     }148     int x=y1+y1/4+c1/4-2*c1+(26*(m1+1)/10)+d1-1;149     x%=7;150     return (Week)x;151 }152 153 void Date::get_date()154 {155     int y1,m1,d1;156     cin>>y1>>m1>>d1;157     while(y1<1970||m1<1||m1>12||d1<1||d1>31)158     {159         if(y1<1970)160             cout<<"输入年份错误，重新输入：";161         if(m1<1||m1>12)162             cout<<"输入月份错误，重新输入：";163         if(d1<1||d1>31)164             cout<<"输入号数错误，重新输入：";165         cin>>y1>>m1>>d1;166     }167     168     //可加上清除输入流的函数169     170     y=y1;171     m=Month(m1);172     d=d1;173     w=get_week();174     l=get_sum_day();175 }176 177 long Date::get_sum_day()178 {179     long l1=0;;180     int i;181     for(i=1970;i<y;i++)182     {183         static Date d1(i,(Month)12,31);184         l1+=d1.day_sum();185     }186     l1+=day_sum();187     l=l1;188     return l1-1;189 }190 191 istream& operator>>(istream& is,Month&m)192 {193     is>>m;194     return is;195 }196 197 istream& operator>>(istream& is,Date& dd)198 {199     int y,m,d;200     //char ch1,ch2,ch3,ch4;201     is>>y>>m>>d;202     if(!is)203         return is;204     /*if(ch1!=‘(‘||ch2!=‘,‘||ch3!=‘,‘||ch4!=‘)‘)205     {206         is.clear(ios_base::failbit);207         return is;208     }*/209     return is;210 }211 212 213 Date::Date(int yy,Month mm,int dd)214     :y(yy),m(mm),d(dd)215 {216     w=get_week();217     l=get_sum_day();218     if(!is_date(yy,mm,dd))219         throw Invalid();220 }221 222 Date::Date(int yy,int mm,int dd)223     :y(yy),m((Month)mm),d(dd)224 {225     w=get_week();226     l=get_sum_day();227     if(!is_date(yy,(Month)mm,dd))228         throw Invalid();229 }230 231 Date next_weekday(Date&d)232 {233     Date d1=d;234     if(d1.week()==sun||d1.week()==mon||d1.week()==tues||d1.week()==wed||d1.week()==thu)235         d1.add_day(1);236     else if(d1.week()==fri)237         d1.add_day(3);238     else239         d1.add_day(2);240     return d1;241         242 }243 244 int Date::day_sum()245 {246     int i=0;247     switch(m)248     {249     case Dec:250         i+=30;251     case Nov:252         i+=31;253     case Oct:254         i+=30;255     case Sep:256         i+=31;257     case Aug:258         i+=31;259     case Jul:260         i+=30;261     case Jun:262         i+=31;263     case May:264         i+=30;265     case Apr:266         i+=31;267     case Mar:268         i+=28;269     case Feb:270         i+=31;271     }272     if(leapyear(y)&&m>2)273         i++;274     i+=d;275     return i;276 }277 278 int week_of_year(Date&d)279 {280     int i=1;281     int j=0;282     Date d1(d.year(),1,1);283     if(d1.week()==sun)284         j+=7;285     else286         j+=7-d1.week();287     while(j<d.day_sum())288     {289         j+=7;290         i++;291     }292     return i;293 }294 295 int main()296 {297     Date d;298     d.get_date();299     cout<<d<<endl;300     keep_window_open();301 }

  1 #include "../../st.h"  2   3 class Rational{  4 public:  5     int re_fenzi()const{return fenzi;}  6     int re_fenmu()const{return fenmu;}  7     Rational():fenzi(0),fenmu(1){}  8     Rational(int i):fenzi(i),fenmu(1){}  9     Rational(int i1,int i2):fenzi(i1),fenmu(i2){} 10     void to_easy(); 11     void operator=(Rational&a); 12     friend istream& operator>>(istream&is,Rational&rt); 13 private: 14     int fenzi; 15     int fenmu; 16 }; 17  18  19 void Rational::to_easy() 20 { 21     int i=(fenzi>fenmu)?fenmu:fenzi; 22     while(i>0) 23     { 24         if(fenzi%i==0&&fenmu%i==0) 25         { 26             fenzi/=i; 27             fenmu/=i; 28         } 29         i--; 30     } 31 } 32  33 Rational operator+(const Rational&a,const Rational&b) 34 { 35     int i=a.re_fenzi()*b.re_fenmu()+a.re_fenmu()*b.re_fenzi(); 36     int j=a.re_fenmu()*b.re_fenmu(); 37     Rational rt(i,j); 38     rt.to_easy(); 39     return rt; 40 } 41  42 Rational operator-(const Rational&a,const Rational&b) 43 { 44     int i=a.re_fenzi()*b.re_fenmu()-a.re_fenmu()*b.re_fenzi(); 45     int j=a.re_fenmu()*b.re_fenmu(); 46     Rational rt(i,j); 47     rt.to_easy(); 48     return rt; 49 } 50  51 Rational operator*(const Rational&a,const Rational&b) 52 { 53     int i=a.re_fenzi()*b.re_fenzi(); 54     int j=a.re_fenmu()*b.re_fenmu(); 55     Rational rt(i,j); 56     rt.to_easy(); 57     return rt; 58 } 59  60 Rational operator/(const Rational&a,const Rational&b) 61 { 62     int i=a.re_fenzi()*b.re_fenmu(); 63     int j=a.re_fenmu()*b.re_fenzi(); 64     Rational rt(i,j); 65     rt.to_easy(); 66     return rt; 67 } 68  69 void Rational::operator=(Rational&b) 70 { 71     b.to_easy(); 72     fenzi=b.fenzi; 73     fenmu=b.fenmu; 74 } 75  76 bool operator==(Rational a,Rational b) 77 { 78     a.to_easy(); 79     b.to_easy(); 80     return a.re_fenmu()==b.re_fenmu()&&a.re_fenzi()==b.re_fenzi(); 81 } 82  83 bool operator!=(Rational a,Rational b) 84 { 85     return !(a==b); 86 } 87  88 ostream& operator<<(ostream&os,Rational&rt) 89 { 90     return os<<rt.re_fenzi()<<"/"<<rt.re_fenmu(); 91 } 92  93 istream& operator>>(istream&is,Rational&rt) 94 { 95     char ch; 96     is>>rt.fenzi>>ch>>rt.fenmu; 97     return is; 98 } 99 100 double rational_to_double(Rational&rt)101 {102     double d;103     if(rt.re_fenmu()!=0)104         d=(double)rt.re_fenzi()/(double)rt.re_fenmu();105     else106         error("分母为0");107     return d;108 }109 110 int main()111     try{112         Rational r1,r2;113         cin>>r1>>r2;114         cout<<r1<<endl<<r2<<endl;115         Rational r3=r1+r2;116         cout<<r3<<endl;117         cout<<r1-r2<<endl;118         cout<<r1*r2<<endl;119         cout<<r1/r2<<endl;120         r2=r1;121         cout<<r1<<endl<<r2<<endl;122         if(r1==r2)123             cout<<"yes"<<endl;124         if(r1!=r2)125             cout<<"no"<<endl;126         cout<<rational_to_double(r1)<<endl;127         keep_window_open();128     }129 catch(exception&e)130 {131     cerr<<e.what()<<endl;132     keep_window_open("~~");133     return 1;134 }       

  1 #include "../../st.h"  2   3 class Money{  4 public:  5     Money():yuan(0),fen(0),s("USD"){sum=0;}  6     Money(int i):yuan(i),fen(0),s("USD"){sum=i*100;d=(double)sum/100;}  7     Money(int i1,int i2):yuan(i1),fen(i2),s("USD"){to_real();sum=yuan*100+fen;d=(double)sum/100;}  8     Money(string ss,double dd):s(ss),d(dd){yuan=int(d);fen=int(d*100)%100;}  9     int re_yuan(){return yuan;} 10     int re_fen(){return fen;} 11     double re_double(){return d;} 12     string re_str(){return s;} 13     void to_real(); 14     void to_double(); 15     friend istream& operator>>(istream& is,Money&m); 16 private: 17     int yuan; 18     int fen; 19     long sum; 20     double d; 21     string s; 22  23 }; 24  25  26  27  28 void Money::to_real()                    //假设输入美分都是三位数 29 { 30     int i; 31      32     if(fen/100!=0) 33     { 34         if((fen%10)>=5) 35         { 36             fen/=10; 37             fen++; 38         } 39         else 40             fen/=10; 41     } 42     sum=yuan*100+fen; 43 } 44  45 istream& operator>>(istream& is,Money&m) 46 { 47     //char c; 48     //is>>c>>m.yuan>>c>>m.fen; 49     is>>m.s>>m.d; 50     m.yuan=int(m.d); 51     m.fen=int(m.d*100)%100; 52     return is; 53 } 54  55 void Money::to_double()    56 { 57     d=double(sum)/100; 58 } 59  60  61  62 ostream& operator<<(ostream& os,Money&m) 63 { 64     m.to_real(); 65     m.to_double(); 66     return os<<m.re_str()<<" "<<m.re_double();; 67 } 68  69 vector<string>name; 70 vector<double>rate; 71  72 void fn()      //录入各国家与美元的汇率 73 { 74     string s="USD"; 75     double r=1; 76     name.push_back(s); 77     rate.push_back(r); 78     cout<<"输入美国与其他国家的汇率："<<endl<<"输入国家："; 79     while(s!="over") 80     { 81         cin>>s; 82         name.push_back(s); 83         cout<<"输入汇率："; 84         cin>>r; 85         rate.push_back(r); 86         cout<<"继续输入国家:"; 87         cin>>s; 88     } 89 } 90  91 Money operator+(Money&a,Money&b) 92 { 93     int i,j; 94     for(i=0;i<name.size();i++) 95         if(a.re_str()==name[i]) 96             break; 97     for(j=0;j<name.size();j++) 98         if(b.re_str()==name[j]) 99             break;100     if(i==name.size()||j==name.size())101         error("没有这个汇率登记记录");102     Money mm("USD",a.re_double()*rate[i]+b.re_double()*rate[j]);103     return mm;104 }105 106 int main()107 try{108     vector<string>name;109     vector<double>rate;110     Money m1,m2;111     cin>>m1>>m2;112     cout<<m1<<endl<<m2<<endl;113     fn();114     cout<<m1+m2<<endl;115     keep_window_open();116 }117 catch(exception&e)118 {119     cerr<<e.what()<<endl;120     keep_window_open("~~");121     return 1;122 }