Parameterized Constructor In C++

Constructor Definition

Constructor is a special member function of a class that is executed whenever we create new objects of that class.

It is used to initialize the data members of new object generally.
The constructor in C++ has the same name as class or structure.

Constructor doesn’t have a return type.

Constructor is automatically called when we create the object of the class.

Member function needs to be called explicitly using object of class.

C++ Parameterized Constructor

Constructors with parameters are known as Parameterized constructors. It is used to provide different values to distinct objects.

A default constructor does not have any parameter, but if you need, a constructor can have parameters. This helps you to assign initial value to an object at the time of its creation as shown in the following example.

Example :

Output :

 Object is being created, length = 10
 Length of line : 10
 Length of line : 6