第五章10

来源：互联网发布：广西广电网络电视编辑：程序博客网时间：2024/06/03 11:26
#include <iostream> #include <cstring> using namespace std; class Teacher                                {public:     Teacher(int,char [],char);                  void display();                           private:    int num;    char name[20];    char sex;   };  Teacher::Teacher(int n,char nam[],char s)     {num=n;   strcpy(name,nam);   sex=s; }  void Teacher::display()                       {cout<<"num:"<<num<<endl;   cout<<"name:"<<name<<endl;   cout<<"sex:"<<sex<<endl; }  class BirthDate                                {public:     BirthDate(int,int,int);                      void display();                              void change(int,int,int);                   private:     int year;     int month;     int day; };  BirthDate::BirthDate(int y,int m,int d)        {year=y;   month=m;   day=d;  }   void BirthDate::display()                     {cout<<"birthday:"<<month<<"/"<<day<<"/"<<year<<endl;}  void BirthDate::change(int y,int m,int d)     {year=y;   month=m;   day=d;  }   class Professor:public Teacher                         //教授类  {public:     Professor(int,char [],char,int,int,int,float);        void display();                                       void change(int,int,int);                           private:     float area;     BirthDate birthday;                                };  Professor::Professor(int n,char nam[20],char s,int y,int m,int d,float a):  Teacher(n,nam,s),birthday(y,m,d),area(a){ }          void Professor::display()                            {Teacher::display();  birthday.display();  cout<<"area:"<<area<<endl; }  void Professor::change(int y,int m,int d)            {birthday.change(y,m,d);  }  int main() {Professor prof1(3012,"Zhang",'f',1949,10,1,125.4);   cout<<endl<<"original data:"<<endl;  prof1.display();                                      cout<<endl<<"new data:"<<endl;  prof1.change(1950,6,1);                               prof1.display();                                  return 0; }
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