Explain the constructor in C++.
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C++ Constructors. Constructors are methods that are automatically executed every time you create an object. The purpose of a constructor is to construct an object and assign values to the object’s members. A constructor takes the same name as the class to which it belongs, and does not return any values.
A constructor is a special type of member function of a class, whose name is the same as that of the class by whom it is invoked and initializes value to the object of a class.
There are 3 types of constructors:
A. Default constructor: It is the most basic type of constructor which accepts no arguments or parameters. Even if it is not called the compiler calls it automatically when an object is created.
B. Parameterized constructor: It is a type of constructor which accepts arguments or parameters. It has to be called explicitly by passing values in the arguments as these arguments help initialize an object when it is created. It also has the same name as that of the class.
C. Copy Constructor: A copy constructor is a member function that initializes an object using another object of the same class. Also, the Copy constructor takes a reference to an object of the same class as an argument.