C++ 学校人员管理系统：多重继承和运算符重载

#include #include using namespace std;

class Person { public: Person(string name1 = '', char s = 'M') { name = name1; sex = s; } virtual void ShowMe(); friend istream& operator>>(istream& in, Person& p); protected: char sex; string name; };

void Person::ShowMe() { cout << name << ' ' << sex; }

istream& operator>>(istream& in, Person& p) { in >> p.name >> p.sex; return in; }

class Staff : public Person { protected: int wID; // 工作号 public: Staff(int id = 0, string name1 = '', char s = 'M') : Person(name1, s) { wID = id; } virtual void ShowMe(); friend istream& operator>>(istream& in, Staff& p); };

void Staff::ShowMe() { Person::ShowMe(); cout << ' (' << wID << ')'; }

istream& operator>>(istream& in, Staff& p) { in >> static_cast<Person&>(p) >> p.wID; return in; }

class Student : public Person { protected: int sID; // 学号 public: Student(int id = 0, string name1 = '', char s = 'M') : Person(name1, s) { sID = id; } virtual void ShowMe(); friend istream& operator>>(istream& in, Student& p); };

void Student::ShowMe() { Person::ShowMe(); cout << ' (' << sID << ')'; }

istream& operator>>(istream& in, Student& p) { in >> static_cast<Person&>(p) >> p.sID; return in; }

class Staff_Student : public Staff, public Student { public: Staff_Student(string name1 = '', char s = 'M', int id1 = 0, int id2 = 0) : Person(name1, s), Student(id1, name1, s), Staff(id2, name1, s) {} virtual void ShowMe(); friend istream& operator>>(istream& in, Staff_Student& p); };

void Staff_Student::ShowMe() { Person::ShowMe(); cout << ' (' << Student::sID << ', ' << Staff::wID << ')'; }

istream& operator>>(istream& in, Staff_Student& p) { in >> static_cast<Person&>(p) >> Student::sID >> Staff::wID; return in; }

class School { private: Person* p[100]; int size; public: School(); ~School() {} void append(Person&); void display(); };

School::School() { size = 0; }

void School::append(Person& p1) { p[size++] = &p1; }

void School::display() { for (int i = 0; i < size; i++) p[i]->ShowMe(); cout << endl; }

int main() { School sch; Staff s1; cin >> s1; sch.append(s1); Student st1; cin >> st1; sch.append(st1); Staff_Student ss1('SS1', 'F', 1001, 1003); cin >> ss1; sch.append(ss1); sch.display(); return 0; }