containership with employees and degrees : class definition « Class « C++ Tutorial

1. C++ Tutorial
2. Class
3. class definition

#include <iostream>  
  #include <string>  
  using namespace std;  

  class student{  
     private:  
        string school; 
        string degree; 
     public:  
        void getedu(){  
           cout << "   Enter name of school or university: ";  
           cin >> school;  
           cout << "   Enter highest degree earned \n";  
           cout << "   (Highschool, Bachelor's, Master's, PhD): ";  
           cin >> degree;  
        }  
        void putedu() const{  
           cout << "\n   School or university: " << school;  
           cout << "\n   Highest degree earned: " << degree;  
        }  
  };  
  class employee{  
     private:  
        string name; 
        unsigned long number;  
     public:  
        void getdata(){  
           cout << "\n   Enter last name: "; cin >> name;  
           cout << "   Enter number: ";      cin >> number;  
        }  
        void putdata() const{  
           cout << "\n   Name: " << name;  
           cout << "\n   Number: " << number;  
        }  
  };  
  class manager{  
     private:  
        string title;   
        double dues;    
        employee emp;   
        student stu;    
     public:  
        void getdata(){  
           emp.getdata();  
           cout << "   Enter title: ";          cin >> title;  
           cout << "   Enter golf club dues: "; cin >> dues;  
           stu.getedu();  
        }  
        void putdata() const{  
           emp.putdata();  
           cout << "\n   Title: " << title;  
           cout << "\n   Golf club dues: " << dues;  
           stu.putedu();  
        }  
  };  
  class scientist{  
     private:  
        int pubs;
        employee emp;
        student stu; 
     public:  
        void getdata(){  
           emp.getdata();  
           cout << "   Enter number of pubs: "; cin >> pubs;  
           stu.getedu();  
        }  
        void putdata() const{  
           emp.putdata();  
           cout << "\n   Number of publications: " << pubs;  
           stu.putedu();  
        }  
    };  
  class laborer{  
     private:   
        employee emp;
     public:  
        void getdata(){ emp.getdata(); }  
        void putdata() const{ emp.putdata(); }  
  };  
  int main()  
  {  
     manager m1;  
     scientist s1, s2;  
     laborer l1;  
    
     cout << endl;  
     cout << "\nEnter data for manager 1";    
     m1.getdata();                            
    
     cout << "\nEnter data for scientist 1";  
     s1.getdata();  
    
     cout << "\nEnter data for scientist 2";  
     s2.getdata();  
    
     cout << "\nEnter data for laborer 1";  
     l1.getdata();  
    
     cout << "\nData on manager 1";           
     m1.putdata();                            
    
     cout << "\nData on scientist 1";  
     s1.putdata();  
    
     cout << "\nData on scientist 2";  
     s2.putdata();  
    
     cout << "\nData on laborer 1";  
     l1.putdata();  
     cout << endl;  
     return 0;  
  }