Program to illustrate an example of containership

 #include<iostream.h>
 #include<stdio.h>
 #include<conio.h>

 const int length=50;


 //------------------------------  student  ------------------------------//


 class student
    {
       private:
        char school[length];
        char degree[length];

       public:
        void get_education();
        void show_education();
    };



 //------------------------------  employee  -----------------------------//


 class employee
    {
       private:
        char name[length];
        char id_number[length];

       public:
        void get_identification();
        void show_identification();
    };


 //------------------------------  manager  ------------------------------//


 class manager
    {
       private:
        char title[length];
        double club_dues;

        student stu;
        employee emp;

       public:
        void get_data();
        void show_data();
    };


 //------------------------------  scientist  ----------------------------//


 class scientist
    {
       private:
        int publications;

        student stu;
        employee emp;

       public:
        void get_data();
        void show_data();
    };


 //------------------------------  labour  -------------------------------//


 class labour
    {
       private:
        employee emp;

       public:
        void get_data();
        void show_data();
    };



 //-----------------------  get_education( )  ----------------------------//


 void student::get_education()
    {
       cout<<\"\\t Enter the School Name : \";
       gets(school);

       cout<<\"\\t Enter the highest Degree earned : \";
       gets(degree);
    }


 //-----------------------  show_education( )  ---------------------------//


 void student::show_education()
    {
       cout<<\"\\t School Name : \"<<school<<endl;
       cout<<\"\\t Highest Degree earned : \"<<degree<<endl;
    }



 //---------------------------  employee  --------------------------------//




 //----------------------  get_identification( )  ------------------------//


 void employee::get_identification()
    {
       cout<<\"\\t Enter the Name : \";
       gets(name);

       cout<<\"\\t Enter the ID Number : \";
       gets(id_number);
    }


 //----------------------  show_identification( )  -----------------------//


 void employee::show_identification()
    {
       cout<<\"\\t Name : \"<<name<<endl;
       cout<<\"\\t ID Number : \"<<id_number<<endl;
    }



 //----------------------------  manager  --------------------------------//




 //----------------------------  get_data( )  ----------------------------//


 void manager::get_data()
    {
       emp.get_identification();

       cout<<\"\\t Enter the Title : \";
       gets(title);

       cout<<\"\\t Enter the Club Dues : \";
       cin>>club_dues;

       stu.get_education();
    }


 //----------------------------  show_data( )  ---------------------------//


 void manager::show_data()
    {
       emp.show_identification();

       cout<<\"\\t Title : \"<<title<<endl;
       cout<<\"\\t Club Dues : \"<<club_dues<<endl;

       stu.show_education();
    }



 //----------------------------  scientist  ------------------------------//




 //----------------------------  get_data( )  ----------------------------//


 void scientist::get_data()
    {
       emp.get_identification();

       cout<<\"\\t Enter the Number of Publications : \";
       cin>>publications;

       stu.get_education();
    }


 //---------------------------  show_data( )  ----------------------------//


 void scientist::show_data()
    {
       emp.show_identification();

       cout<<\"\\t Number of Publications : \"<<publications<<endl;

       stu.show_education();
    }



 //-----------------------------  labour  --------------------------------//




 //----------------------------  get_data( )  ----------------------------//


 void labour::get_data()
    {
       emp.get_identification();
    }


 //---------------------------  show_data( )  ----------------------------//


 void labour::show_data()
    {
       emp.show_identification();
    }


 main()
    {
       clrscr();

       manager m;
       scientist s;
       labour l;

       cout<<\"\\n *********  Manager  *********\"<<endl;
       m.get_data();

       cout<<\"\\n *********  Scientist  ********\"<<endl;
       s.get_data();

       cout<<\"\\n *********  Labour  ********\"<<endl;
       l.get_data();

       getch();
       clrscr();

       cout<<\"\\n *********  Manager  *********\"<<endl;
       m.show_data();

       cout<<\"\\n *********  Scientist  ********\"<<endl;
       s.show_data();

       cout<<\"\\n *********  Labour  ********\"<<endl;
       l.show_data();

       getch();
       return 0;
    }