Question

Define Constructor ????
With example............

Answer 1

How construct a thing is known as constructor
Ex. The mason is constructor of our house

Answer 2

A constructor is a special method that builds the instance of an object when a new object is created.

(or)

The constructor is called whenever a new object is created.

Constructor name will be same as the name of the class and they never have a return type.



Following is the example of the constructor: 

Class Demo
{

public : 
int a,b;

Demo()
{
a = 100;
b = 200;

}
};

int main()
{
Demo d;
cout << "a: "<< d.a << endl << "b: "<< d.b;
return 1;
}


Hope this helps!