A Constructor in C is used in the memory management of C++programming. It allows built-in data types like int, float and user-defined data types such as class. Constructor in Object-oriented programming initializes the variable of a user-defined data type. Constructor helps in the creation of an object.

Why is constructor useful?

We use constructors to initialize the object with the default or initial state. The default values for primitives may not be what are you looking for. Another reason to use constructor is that it informs about dependencies.

Why constructor is used in programming?

In class-based object-oriented programming, a constructor (abbreviation: ctor) is a special type of subroutine called to create an object. It prepares the new object for use, often accepting arguments that the constructor uses to set required member variables.