Constructor

A constructor is a unique method that is automatically called during the creation of an object.
Its primary purpose is to initialize the data members of newly created objects. In C++, the constructor shares the same name as the class or structure it belongs to.

Types of Constructors:

1. Default Constructor
   A constructor without any arguments is referred to as a default constructor.
   It is automatically called during the creation of an object.

2. Parameterized Constructor
   A constructor with parameters is termed as a parameterized constructor.
   It is utilized to supply different values to individual objects.

3. Copy Constructor (Important)
   A copy constructor is an overloaded constructor used to declare and initialize an object based on another object.
   It comes in two forms:

   • The default copy constructor provided by the language
   • The user-defined copy constructor

Learn More About Constructors (With Code Examples):

• C++ (opens in a new tab)
• Java (opens in a new tab)
• Python (opens in a new tab)

Destructor

A destructor in object-oriented programming (OOP) is a special member function of a class that is automatically called when an object is destroyed or goes out of scope.
Its primary purpose is to perform cleanup tasks, such as:

• Releasing memory
• Closing file handles
• Disconnecting database connections

Learn More About Destructors (With Code Examples):

• C++ (opens in a new tab)
• Java (opens in a new tab)
• Python (opens in a new tab)

this Keyword / Pointer

The keyword this refers to the current instance of the class.
It serves three main purposes:

1. It can pass the current object as a parameter to another method.
2. It can refer to the current class instance variable.
3. It can declare indexers.