DEFINITION 6: CONSTRUCTOR - PRATMG/2143-OOP-Tamang GitHub Wiki

A constructor is a type of class member function that initializes class objects. Constructor is automatically called in C++ when an object (instance of a class) is created. Because it has no return type, it is a special member function of the class.

A constructor is different from normal functions in following ways:

• Constructor has same name as the class itself
• Constructors don’t have return type
• A constructor is automatically called when an object is created.
• It must be placed in public section of class.
• If we do not specify a constructor, C++ compiler generates a default constructor for object (expects no parameters and has an empty body).

// CPP program to illustrate
// parameterized constructors
#include <iostream>
using namespace std;

class Point
{
private:
	int x, y;

public:
	// Parameterized Constructor
	Point(int x1, int y1)
	{
		x = x1;
		y = y1;
	}

	int getX()
	{
		return x;
	}
	int getY()
	{
		return y;
	}
};

int main()
{
	// Constructor called
	Point p1(10, 15);

	// Access values assigned by constructor
	cout << "p1.x = " << p1.getX() << ", p1.y = " << p1.getY();

	return 0;
}

REFERENCE:

• https://www.geeksforgeeks.org/constructors-c/