Note: In copy constructor passing an argument by value is not possible. */Įxample (int a) //parameterized constructor to initialize l and bĮxample( example &b) //copy constructor with reference object argumentĮxample c1(2) //initializing the data members of object 'c' implicitlyĮxample c2(c1) //copy constructor calledĬout << 'example c1 = ' << c1.display() << endl Ĭout << 'example c2 = ' << c2.display() << endl Ĭout << 'example c3 = ' << c3.display() << endl Ĭout << 'example c4 = ' << c4.display() << endl *.A program to highlight the concept of copy constructor. Example to illustrate the concept of copy constructor Moreover, it creates a new object as a copy of an existing object.For the classes which do not have a copy constructor defined by the user, compiler itself creates a copy constructor for each class known as default copy constructor. But the classes own object can be passed as a reference parameter.Such constructor having reference to the object of its own class is known as copy constructor. We have to pass the values to the parameterized. Generally in a constructor the object of its own class can’t be passed as a value parameter. In java, a constructor that can accept some parameters/arguments is called a parameterized constructor. Note: Remember that constructor is always defined and declared in public section of the class and we can’t refer to their addresses. Void display( ) //function to display the areaĪBC c(2,4) //initializing the data members of object 'c' implicitlyĪBC c1= ABC(4,4) // initializing the data members of object 'c' explicitly

*/ĪBC (int a,int b) //parameterized constructor to initialize l and b Following sample program will highlight the concept of parameterized constructor Using bunch of function calls as elements of array: It’s just like normal array declaration but here we initialize the array with function calls of constructor as elements of that array.

This can be achieved by passing the arguments to the constructor functions when the object is created. Different methods to initialize the Array of objects with parameterized constructors: 1. In practical programs, we often need to initialize the various data elements of the different object with different values when they are created. The parameterized constructors are the constructors having a specific number of arguments to be passed.

To put it up simply, the constructor that can take arguments are called parameterized constructor. Constructors are used to initialize objects.

Parameterized constructor