{"id":211,"date":"2024-05-02T20:31:24","date_gmt":"2024-05-02T12:31:24","guid":{"rendered":"http:\/\/www.cmd137blog.top\/?p=211"},"modified":"2024-05-02T20:31:26","modified_gmt":"2024-05-02T12:31:26","slug":"bjfuoj-c%e7%a8%8b%e5%ba%8f%e8%ae%be%e8%ae%a1-%e5%ae%9e%e9%aa%8c3-%e7%bb%a7%e6%89%bf%e5%92%8c%e8%99%9a%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"http:\/\/www.cmd137blog.top\/?p=211","title":{"rendered":"BJFUOJ-C++\u7a0b\u5e8f\u8bbe\u8ba1-\u5b9e\u9a8c3-\u7ee7\u627f\u548c\u865a\u51fd\u6570"},"content":{"rendered":"\n

\u5b8c\u6574\u9898\u76ee\u89c1BJFUOJ-C++\u7a0b\u5e8f\u8bbe\u8ba1-\u5b9e\u9a8c3-\u7ee7\u627f\u548c\u865a\u51fd\u6570-CSDN\u535a\u5ba2<\/a><\/h1>\n\n\n\n

A TableTennisPlayer<\/h1>\n\n\n\n

\u7b54\u6848\uff1a<\/h2>\n\n\n\n
#include<iostream>\n#include<cstring>\nusing namespace std;\n\nclass TableTennisPlayer{\nprivate:\n    string firstname;\n    string lastname;\n    bool hasTable;\n\npublic:\n    TableTennisPlayer(const string &, const string &, bool);\n    string FirstName() const;\n    string LastName() const;\n    bool HasTable() const;\n};\n\nTableTennisPlayer::TableTennisPlayer(const string & fn, const string & ln, bool h)\n{\n    firstname=fn;\n    lastname=ln;\n    hasTable=h;\n}\n\nstring TableTennisPlayer::FirstName()const{ \n    return firstname;\n}\n\nstring TableTennisPlayer::LastName()const{ \n    return lastname;\n}\n\nbool TableTennisPlayer::HasTable()const{\n    return hasTable;\n}\n\n\nclass RatedPlayer :public TableTennisPlayer{\nprivate:\n    int rating;\npublic:\n    RatedPlayer(int,const string &, const string &, bool);\n    int Rating() const;\n};\n\nRatedPlayer::RatedPlayer(int r,const string & fn, const string & ln, bool h):TableTennisPlayer(fn,ln,h)\n{\n    rating=r;\n}\n\nint RatedPlayer::Rating() const\n{\n    return rating;\n}\n\nint main(){\n\n    string firstname, lastname;\n    bool hasTable;\n    int rating;\n    char flag;\n\n    while(cin>>flag){\n        if(flag=='T'){\n            cin>>firstname>>lastname>>hasTable;\n            TableTennisPlayer tp(firstname,lastname,hasTable);\n            if(tp.HasTable())\n                cout<<tp.FirstName()<<\" \"<<tp.LastName()<<\" has a table.\\n\";\n            else\n                cout<<tp.FirstName()<<\" \"<<tp.LastName()<<\" hasn't a table.\\n\";\n        } else if(flag=='R'){       \n            cin>>firstname>>lastname>>hasTable>>rating;\n            RatedPlayer rp(rating,firstname,lastname,hasTable);\n            if(rp.HasTable())\n                cout<<rp.FirstName()<<\" \"<<rp.LastName()<<\" has a table. The rating is \"<<rp.Rating()<<\".\\n\";\n            else\n            cout<<rp.FirstName()<<\" \"<<rp.LastName()<<\" hasn't a table. The rating is \"<<rp.Rating()<<\".\\n\";\n        }\n    }\n\nreturn 0;\n\n}<\/code><\/pre>\n\n\n\n
\u91cd\u8981\u77e5\u8bc6\u70b9\uff1a<\/h2>\n\n\n\n
\u00b7\u7ee7\u627f\u76f8\u5173\u77e5\u8bc6\uff1b
\u00b7\u6d3e\u751f\u7c7b\u5bf9\u8c61\u6784\u9020\u51fd\u6570\u5148\u8c03\u7528\u7236\u7c7b\u6784\u9020\u51fd\u6570\uff0c\u4ee5\u53ca\u5982\u4f55\u5b9e\u73b0\u3002<\/p>\n\n\n\n
B Person\u548cStudent<\/h1>\n\n\n\n
\u7b54\u6848\uff1a<\/h2>\n\n\n\n
#include<iostream>\n#include<cstring>\n\nusing namespace std;\n\nclass Person{\nprivate:\n    string name;\npublic:\n    virtual void input();\n    virtual void display();\n};\n\nvoid Person::input()\n{\n    cin>>name;\n}\n\nvoid Person::display()\n{\n    cout<<name<<endl;\n}\n\nclass Student:public Person{\nprivate:\n    string id;\npublic:\n    void input();\n    void display();\n};\n\nvoid Student::input()\n{\n    cin>>id;\n    Person::input();\n}\n\nvoid Student::display()\n{\n    cout<<id<<\" \";\n    Person::display();\n}\n\nint main(){\n    Person * p;\n\n    p = new Person;\n\n    p->input();\n\n    p->display();\n\n    delete p;\n\n    p = new Student;\n\n    p->input();\n\n    p->display();\n\n    delete p;\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n
\u91cd\u8981\u77e5\u8bc6\u70b9\uff1a<\/h2>\n\n\n\n
\u00b7\u591a\u6001\uff08\u4e3b\u51fd\u6570\u4e2d\u4f53\u73b0\uff09
\u00b7\u865a\u51fd\u6570\u7684\u5b9a\u4e49\u4e0e\u5728\u5b50\u7c7b\u4e2d\u7684\u5b9e\u73b0\uff08virtual\u5173\u952e\u5b57\uff09
\u00b7\u8d4b\u503c\u517c\u5bb9\u89c4\u5219\u662f\u6307\u5728\u516c\u6709\u7ee7\u627f\u60c5\u51b5\u4e0b\uff0c\u5bf9\u4e8e\u67d0\u4e9b\u573a\u5408\uff0c\u4e00\u4e2a\u6d3e\u751f\u7c7b\u7684\u5bf9\u8c61\u53ef\u4ee5
\u4f5c\u4e3a\u57fa\u7c7b\u5bf9\u8c61\u6765\u4f7f\u7528\u3002\u5373\uff1a\u516c\u6709\u6d3e\u751f\u7c7b\u7684\u5bf9\u8c61\u53ef\u4ee5\u8d4b\u503c\u7ed9\u4e00\u4e2a\u57fa\u7c7b\u5bf9\u8c61\uff0c\u5e76\u81ea
\u52a8\u8f6c\u6362\u4e3a\u57fa\u7c7b\u7c7b\u578b\u3002 \u4f46\u57fa\u7c7b\u5bf9\u8c61\u53ea\u80fd\u201c\u770b\u5230\u201d\u5176\u6240\u66ff\u4ee3\u7684\u6d3e\u751f\u7c7b\u5bf9\u8c61\u4e2d\u7684\u57fa\u7c7b\u90e8\u5206\u3002<\/p>\n\n\n\n
C \u56fe\u4e66\u5546\u54c1<\/h1>\n\n\n\n
\u7b54\u6848\uff1a<\/h2>\n\n\n\n
#include<iostream>\n\nusing namespace std;\n\nclass Item_base \/\/\u672a\u6253\u6298\u7684\u56fe\u4e66\u5546\u54c1\n{\nprotected:\n    string ISBN; \/\/\u56fe\u4e66\u5e8f\u5217\u53f7\n    double price; \/\/\u5355\u4ef7\n\npublic:\n    Item_base(const string & book_ISBN = \"\", double sales_price = 0.0);\n    string get_ISBN() const;\n    virtual double net_price(int) const; \/\/\u8fd4\u56de\u8d2d\u4e70\u6307\u5b9a\u6570\u91cf\u7684\u56fe\u4e66\u7684\u603b\u4ef7\n    virtual ~Item_base();\n};\n\nItem_base::Item_base(const string & book_ISBN, double sales_price)\n{\n    ISBN=book_ISBN;\n    price=sales_price;\n}\n\nstring Item_base::get_ISBN()const\n{\n    return ISBN;\n}\n\ndouble Item_base::net_price(int n) const\n{\n    return price*n;\n}\n\nItem_base::~Item_base(){\n}\n\nclass Bulk_Item : public Item_base \/\/\u6839\u636e\u8d2d\u4e70\u6570\u91cf\u6253\u6298\n{\npublic:\n    Bulk_Item(const string & book_ISBN = \"\", double sales_price = 0.0, int min_qty = 0, double discount = 0.0);\n    double net_price(int) const; \/\/\u8fd4\u56de\u6839\u636e\u8d2d\u4e70\u6570\u91cf\u6253\u6298\u540e\u7684\u603b\u4ef7\nprivate:\n    int min_qty; \/\/ \u4e70\u591f\u8fd9\u4e2a\u6570\u91cf\u53ef\u4ee5\u6253\u76f8\u5e94\u7684\u6298\u6263\n    double discount; \/\/\u6298\u6263\n};\n\nBulk_Item::Bulk_Item(const string & book_ISBN, double sales_price, int min_qty, double discount):Item_base(book_ISBN,sales_price)\n{\n    this->min_qty=min_qty;\n    this->discount=discount;\n}\n\ndouble Bulk_Item::net_price(int n)const\n{\n    return price*n*(1.0-discount);\n}\n\n\nint main()\n{\n    Item_base book(\"0-001-0001-1\", 10.0);\n    Bulk_Item bulk1(\"0-001-0001-1\",10.0, 5, 0.1);\n    Bulk_Item bulk2(\"0-001-0001-1\", 10.0, 10, 0.2);\n    int num;\n    while (cin >> num)\n    {\n    cout << bulk1.get_ISBN() << \"\\t\" << num << \"\\t\";\n    Item_base * p;\n    if (num >= 10) p = &bulk2;\n    else if (num >= 5) p = &bulk1;\n    else p = &book;\n    cout << p->net_price(num) << \"\\n\";\n    }\n    return 0;\n}<\/code><\/pre>\n\n\n\n
\u91cd\u8981\u77e5\u8bc6\u70b9<\/h2>\n\n\n\n
\u00b7\u865a\u51fd\u6570\uff1a
\uff081\uff09\u53ea\u6709\u7c7b\u7684\u666e\u901a\u6210\u5458\u51fd\u6570\u6216\u6790\u6784\u51fd\u6570\u624d\u80fd\u58f0\u660e\u4e3a\u865a\u51fd\u6570\u3002
\uff082\uff09\u57fa\u7c7b\u4e2d\u7684\u865a\u51fd\u6570\u53ef\u4ee5\u5728\u6d3e\u751f\u7c7b\u4e2d\u88ab\u91cd\u65b0\u5b9a\u4e49\uff0c\u4f46\u91cd\u65b0\u5b9a\u4e49\u65f6\u5fc5\u987b\u4e0e\u57fa\u7c7b\u4e2d\u7684\u51fd\u6570\u539f\u578b\u5b8c\u5168\u76f8\u540c\uff08\u540c\u540d\u8986\u76d6\uff09\uff0c\u4e14\u65e0\u8bba\u662f\u5426\u7528virtual\u4fee\u9970\uff0c\u7cfb\u7edf\u90fd\u5c06\u5176\u89c6\u4e3a\u865a\u51fd\u6570\uff08\u5efa\u8bae\u52a0\u4e0avirtual\uff09\u3002
\uff083\uff09\u5f53\u4e00\u4e2a\u7c7b\u7684\u516c\u6709\u6210\u5458\u51fd\u6570\u58f0\u660e\u4e3a\u865a\u51fd\u6570\uff0c\u4e14\u5728\u5176\u516c\u6709\u6d3e\u751f\u7c7b\u4e2d\u88ab\u540c\u540d\u8986\u76d6\u65f6\uff1a<\/p>\n\n\n\n
\uf0a7 \u5f53\u7528\u57fa\u7c7b\u6307\u9488\uff08\u6216\u5f15\u7528\uff09\u6307\u5411\u8fd9\u4e2a\u6d3e\u751f\u7c7b\u5bf9\u8c61\uff0c\u5e76\u7528\u8be5\u6307\u9488\u8c03\u7528\u8be5\u51fd\u6570\u65f6\uff0c\u7cfb\u7edf\u81ea\u52a8\u7528\u6d3e\u751f\u7c7b\u4e2d
\u7684\u540c\u540d\u51fd\u6570\u3002<\/p>\n\n\n\n
\uf0a7 \u5373\uff1a\u5f53\u7528\u57fa\u7c7b\u6307\u9488\uff08\u6216\u5f15\u7528\uff09\u6307\u5411\u6d3e\u751f\u7c7b\u5bf9\u8c61\uff0c\u5e76\u7528\u8be5\u6307\u9488\u8c03\u7528\u8be5\u51fd\u6570\u65f6\uff0c\u7cfb\u7edf\u4f1a\u5728\u7a0b\u5e8f\u8fd0\u884c\u4e2d\u6839\u636e\u6240\u6307\u5411\u5bf9\u8c61\u7684\u4e0d\u540c\uff0c\u81ea\u52a8\u9009\u62e9\u6267\u884c\u5f53\u524d\u6307\u5411\u5bf9\u8c61\u6240\u5c5e\u7c7b\u7684\u6210\u5458\u51fd\u6570\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86\u8fd0\u884c\u65f6\u7684\u591a
\u6001\u6027\u3002
\uff085\uff09\u9759\u6001\u6210\u5458\u51fd\u6570\u4e0d\u80fd\u58f0\u660e\u4e3a\u865a\u51fd\u6570\u3002\u56e0\u4e3a\u9759\u6001\u6210\u5458\u51fd\u6570\u4e0d\u5c5e\u4e8e\u67d0\u4e00\u4e2a\u5bf9\u8c61\uff0c\u6ca1
\u6709\u591a\u6001\u6027\u7684\u7279\u5f81\u3002
\uff086\uff09\u6784\u9020\u51fd\u6570\u4e0d\u80fd\u662f\u865a\u51fd\u6570\u3002
\uff087\uff09\u6790\u6784\u51fd\u6570\u53ef\u4ee5\u662f\u865a\u51fd\u6570\uff0c\u4e14\u5f80\u5f80\u88ab\u58f0\u660e\u4e3a\u865a\u51fd\u6570\u3002<\/p>\n\n\n\n
D Vehicle\u7c7b<\/h1>\n\n\n\n
\u7b54\u6848\uff1a<\/h2>\n\n\n\n
#include<iostream>\n\nusing namespace std;\n\nclass Vehicle{\nprotected:\n    string name;\n    string color;\npublic:\n    Vehicle(string ,string);\n    virtual void display()=0;\n};\n\nVehicle::Vehicle(string n,string c)\n{\n    name=n;\n    color=c;\n}\n\nclass Car:public Vehicle{\nprivate: \n    int passenger;\npublic:\n    Car(string,string,int);\n    void display();\n};\n\nCar::Car(string n,string c,int num):Vehicle(n,c)\n{\n    passenger=num;\n}\n\nvoid Car::display()\n{\n    cout<<\"Car name:\"<<name<<\" Car color:\"<<color<<\" Car passenger:\"<<passenger<<endl;\n}\n\nclass Truck:public Vehicle{\nprivate: \n    double capacity;\npublic:\n    Truck(string,string,double);\n    void display();\n};\n\nTruck::Truck(string n,string c,double m):Vehicle(n,c)\n{\n    capacity=m;\n}\n\nvoid Truck::display()\n{\n    cout<<\"Truck name:\"<<name<<\" Truck color:\"<<color<<\" Truck capacity:\"<<capacity<<endl;\n}\n\nint main()\n{\n    Vehicle *p;\n    char type;\n    char name[110],color[110];\n    int pas;\n    double cap;\n    while(cin>>type)\n    {\n        cin>>name>>color;\n        if(type == 'C')\n        {\n            cin>>pas;\n            Car car(name,color,pas);\n            p = &car;\n            p->display();\n        }\n        else if(type == 'T')\n        {\n        cin>>cap;\n        Truck truck(name,color,cap);\n        p = &truck;\n        p->display();\n        }\n    }\nreturn 0;\n}<\/code><\/pre>\n\n\n\n
\u91cd\u8981\u77e5\u8bc6\u70b9\uff1a<\/h2>\n\n\n\n
\u00b7\u7eaf\u865a\u51fd\u6570\uff1a
\u5728\u5b9a\u4e49\u4e00\u4e2a\u8868\u8fbe\u62bd\u8c61\u6982\u5ff5\u7684\u57fa\u7c7b\u65f6\uff0c\u6709\u65f6\u53ef\u80fd\u4f1a\u65e0\u6cd5\u7ed9\u51fa\u67d0\u4e9b\u6210\u5458
\u51fd\u6570\u7684\u5177\u4f53\u5b9e\u73b0\u3002\u8fd9\u65f6\uff0c\u5c31\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u51fd\u6570\u58f0\u660e\u4e3a\u7eaf\u865a\u51fd\u6570\u3002<\/p>\n\n\n\n
virtual \u7c7b\u578b \u51fd\u6570\u540d\uff08\u53c2\u6570\u8868\uff09=0 ;<\/p>\n\n\n\n
\uf0a7 \u5373\u7eaf\u865a\u51fd\u6570\u5c31\u662f\u5728\u57fa\u7c7b\u4e2d\u58f0\u660e\u4e3a\u865a\u51fd\u6570\uff0c\u4f46\u672a\u7ed9\u51fa\u5177\u4f53\u51fd\u6570\u5b9a\u4e49\u4f53\u7684\u51fd\u6570<\/p>\n\n\n\n
\uf0a7 \u5728\u5404\u6d3e\u751f\u7c7b\u4e2d\u5bf9\u8be5\u865a\u51fd\u6570\u8fdb\u884c\u540c\u540d\u8986\u76d6\uff08\u5373\u91cd\u5199\uff09\u3002<\/p>\n\n\n\n
\u00b7\u62bd\u8c61\u7c7b\uff1a
\u7c7b\u4f53\u5185\u58f0\u660e\u4e86\u7eaf\u865a\u51fd\u6570\u7684\u7c7b\uff0c\u79f0\u4e3a\u62bd\u8c61\u7c7b\u3002<\/p>\n\n\n\n
\uf076 \u62bd\u8c61\u7c7b\u7684\u4e3b\u8981\u4f5c\u7528\uff1a\u4ee5\u6b64\u7c7b\u4e3a\u57fa\u7c7b\u5efa\u7acb\u7684\u4e00\u4e2a\u7c7b\u65cf\u5177\u6709\u4e00\u7ec4\u516c\u5171\u7684\u63a5\u53e3\uff08\u5373\u516c
\u6709\u6210\u5458\u51fd\u6570\uff09\uff0c\u5c06\u5b83\u4eec\u5b9a\u4e49\u4e3a\u7eaf\u865a\u51fd\u6570\uff0c\u4f7f\u5b83\u4eec\u80fd\u591f\u66f4\u6709\u6548\u5730\u53d1\u6325\u591a\u6001\u7279\u6027\u3002<\/p>\n\n\n\n
\uf076 \u62bd\u8c61\u7c7b\u58f0\u660e\u4e86\u4e00\u65cf\u6d3e\u751f\u7c7b\u7684\u5171\u540c\u63a5\u53e3\uff0c\u800c\u63a5\u53e3\u7684\u5b8c\u6574\u5b9e\u73b0\uff0c\u5373\u7eaf\u865a\u51fd\u6570\u7684\u51fd\u6570<\/p>\n\n\n\n
\u4f53\uff0c\u8981\u7531\u6d3e\u751f\u7c7b\u81ea\u5df1\u5b9a\u4e49\u3002<\/p>\n\n\n\n
\u00b7\u4f7f\u7528\u7eaf\u865a\u51fd\u6570\u4e0e\u62bd\u8c61\u7c7b\u7684\u6ce8\u610f\u4e8b\u9879\uff1a
\uff081\uff09\u62bd\u8c61\u7c7b\u53ea\u80fd\u7528\u4f5c\u57fa\u7c7b\u6765\u6d3e\u751f\u51fa\u65b0\u7c7b\uff0c\u4e0d\u80fd\u58f0\u660e\u62bd\u8c61\u7c7b\u7684\u5bf9\u8c61\uff0c\u4f46\u53ef\u4ee5\u58f0\u660e\u6307\u5411\u62bd\u8c61\u7c7b\u7684\u6307\u9488
\u53d8\u91cf\u6216\u5f15\u7528\u53d8\u91cf\u3002<\/p>\n\n\n\n
\uff082\uff09\u62bd\u8c61\u7c7b\u4e2d\u53ef\u4ee5\u6709\u591a\u4e2a\u7eaf\u865a\u51fd\u6570\u3002<\/p>\n\n\n\n
\uff083\uff09\u62bd\u8c61\u7c7b\u4e2d\u4e5f\u53ef\u4ee5\u5b9a\u4e49\u5176\u4ed6\u975e\u7eaf\u865a\u51fd\u6570\u3002<\/p>\n\n\n\n
\uff084\uff09\u62bd\u8c61\u7c7b\u6d3e\u751f\u51fa\u65b0\u7c7b\u4e4b\u540e\uff0c\u5982\u679c\u5728\u6d3e\u751f\u7c7b\u4e2d\u6ca1\u6709\u91cd\u65b0\u5b9a\u4e49\u57fa\u7c7b\u4e2d\u7684\u7eaf\u865a\u51fd\u6570\uff0c\u5219\u5fc5\u987b\u518d\u5c06\u8be5\u865a
\u51fd\u6570\u7ee7\u7eed\u58f0\u660e\u4e3a\u7eaf\u865a\u51fd\u6570\uff0c\u6b64\u65f6\uff0c\u8fd9\u4e2a\u6d3e\u751f\u7c7b\u4ecd\u7136\u662f\u4e00\u4e2a\u62bd\u8c61\u7c7b\uff1b<\/p>\n\n\n\n
\uff085\uff09\u5728\u4e00\u4e2a\u590d\u6742\u7684\u7c7b\u7ee7\u627f\u7ed3\u6784\u4e2d\uff0c\u8d8a\u4e0a\u5c42\u7684\u7c7b\u62bd\u8c61\u7a0b\u5ea6\u5c31\u8d8a\u9ad8\uff0c\u6709\u65f6\u751a\u81f3\u65e0\u6cd5\u7ed9\u51fa\u67d0\u4e9b\u6210\u5458\u51fd\u6570
\u7684\u5177\u4f53\u5b9e\u73b0\u3002
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#include<iostream>\n#include<iomanip>\n#include<cmath>\nusing namespace std;\n\nconst double pi = acos(-1);\n\nclass Shape {\npublic:\nShape() {}\nvirtual double area() = 0;\nvirtual void input() = 0;\nvirtual double volume() = 0;\nvirtual ~Shape() {}\n};\n\nclass Cylinder:public Shape\n{\nprivate:\n    int r;\n    int h;\npublic:\n    double area();\n    void input();\n    double volume();\n};\n\ndouble Cylinder::area()\n{\n    return pi*r*r*2+2*pi*r*h;\n}\n\nvoid Cylinder::input()\n{\n    cin>>r>>h;\n}\n\ndouble Cylinder::volume()\n{\n    return pi*r*r*h;\n}\n\nclass Cuboid:public Shape\n{\nprivate:\n    int a;\n    int b;\n    int c;\npublic:\n    double area();\n    void input();\n    double volume();\n};\n\ndouble Cuboid::area()\n{\n    return 2*a*b+2*a*c+2*b*c;\n}\n\nvoid Cuboid::input()\n{\n    cin>>a>>b>>c;\n}\n\ndouble Cuboid::volume()\n{\n    return a*b*c;\n}\n\nclass Ball:public Shape\n{\nprivate:\n    int r;\npublic:\n    double area();\n    void input();\n    double volume();\n};\n\ndouble Ball::area()\n{\n    return 4.0*pi*r*r;\n}\n\nvoid Ball::input()\n{\n    cin>>r;\n}\n\ndouble Ball::volume()\n{\n    return (4.0\/3.0)*pi*r*r*r;\n}\n\nvoid work(Shape *s) {\n    s->input();\n    cout << s->area() << \" \" << s->volume() << endl;\n    delete s;\n}\n\nint main() {\n    char c;\n    while (cin >> c) {\n        switch (c) {\n            case 'y':\n                work(new Cylinder());\n                break;\n            case 'c':\n                work(new Cuboid());\n                break;\n            case 'q':\n                work(new Ball());\n                break;\n            default:\n                break;\n        }\n    }\n    return 0;\n}<\/code><\/pre>\n\n\n\n
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