Hierarchical inheritances in C++

 Hierarchical inheritances:

• Hierarchy inheritance has one base class and multiple derived classes.
• It means, one base class is derived from multiple derived classes.

Syntax:

1. class a

   {

             //Base class

   };

   class b: public a

   {

             //Derived class1

   };

   class c: public a

   {

             //Derived class2

   };

   //Object creation

   Derived class_name object_name;

   object_name.function_name();

Example:

1. #include<iostream.h>

   #include<conio.h>

   class data //Base class

   {

   public:

   int x,y;

   void get_data()

   {

   cout<<"\n \n Enter x and y value : ";

   cin >>x>>y;

   }

   };

    

   class add: public data //Derived class1

   {

   public:

   void add_operation()

   {

   cout<<"\n Additions of x and y value is : "<<x+y;

   }

   };

   class sub : public data //Derived class2

   {

   public:

   void sub_operation()

   {

             cout<<"\n Subtraction of x and y value is : "<<x-y;

   }

   };

   class mul: public data //Derived class3

   {

   public:

   void mul_operation()

   {

             cout<<"\n Multiplications of x and y value is : "<<x*y;

   }

   };

   class div: public data //Derived class4

   {

   public:

   void div_operation()

   {

             cout<<"\n Divisions of x and y value is : "<<x/y;

   }

   };

   void main()

   {

   clrscr();

   add a;

   a.get_data();

   a.add_operation();

   sub s;

   s.get_data();

   s.sub_operation();

   mul m;

   m.get_data();

   m.mul_operation();

   div d;

   d.get_data();

   d.div_operation();

   getch();

   }

Output:

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