Inheritance in C++

 Inheritance:

It is the process of joining two or more classes and we can access the values from both classes.

Types of Inheritance:

1) Single inheritance

2) Multilevel inheritance

3) Multiple inheritances

4) Hierarchical inheritance

5) Hybrid inheritance

Benefits of inheritance:

• Software reusability
• Information hiding
• Code sharing

Syntax:

1. class a

   {

             //Base class

   }

   class b: public a

   {

             //Derived class

   }

   Object creation:

   Derived_class_name object_name;

   object_name.function(parameter list); //If use constructor then NO need this

Example:

1. #include<iostream.h>

   #include<conio.h>

   class item // Base class

   {

   public:

   char item_name[10];

   int qty;

   float price;

   double amt;

   item() //Constructor

   {

   cout<<"\n Enter item name : ";

   cin>>item_name;

   cout<<"\n Enter number of quantity : ";

   cin>>qty;

   cout<<"\n Enter item price : ";

   cin>>price;

   amt=qty*price;

   }

   };

   class display : public item // Derived class

   {

   public:

   display()

   {

   cout<<"\n \n Output of Item details with total amount........... "<<endl<<endl;

   cout<<"\n Item name : "<<item_name<<endl;

   cout<<"\n Quantity : "<<qty<<endl;

   cout<<"\n Item price : "<<price<<endl;

   cout<<"\n Total amout : "<<amt<<endl;

   }

   };

   void main()

   {

   clrscr();

   display d;//Object

   getch();

   }

Output:

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