Class and Objects in Object-Oriented Programming

Class and Object Definitions

• Class: A user-defined derive data type that combines data and its association function together into a single unit.

• Object: An instance variable of a class. Once a class is created, any number of objects can be declared.

Advantages and Need of Using Class

• Represents Real World Entities: Classes represent real-world entities, containing data types as well as working with related functions.

• Supports OOP's Concepts: Supports concepts such as abstraction, incamsulation, inheritance, and data hiding.

Syntax for Creating Class

• Declaration Structure:

class Class_name
{
private:
    Data members Declaration;
    Member Function Declaration;
public:
    DMD;
    MFD;
protected:
    DMD;
    MFD;
};

Components of a Class

• Class Tag Name: Defines the name of a class whose object is to be created.

• Data Member: Members of a class that describe the characteristics of the class. A class may contain no data members or any number of data members in any part.