What is constructor overloading in c++

[Mast Maula]

I’m a 1st year student of bsc-it and I don’t have any IT background. I want to know about constructor and constructor overloading in c++. I don’t understand the difference between the two, I’m new in c++ programming. Please explain me the why constructor is used and why constructor overloading is used. Please give me the difference between the two I’m very confused, please help me.

[D_chapple]

constructor:
Constructor is a special function of class. It is not the same but something similar like function. Constructor is a function which call automatically at the time of execution of program. The name of a constructor is same as the name of the class. Constructor can take parameter also, Constructor containing parameter are called parameterized constructor.
Constructor overloading:

overloading a constructor is same like function overloading.
int cons( int a );
double cons( double a );
int cons( int a, int b );
double cons( int a ); // _NOT_ ALLOWED
in the above example we have declared the four constructor. The above two is differ in the type and third one is differ in the parameter, fourth one considered as equivalent to a first one therefore it is not allowed.

[Akiraa]

A constructor is a special function which is call at the time of object creation. Constructor has same name as the name of a class. If we don’t take any constructor compiler call a default constructor.Overloading constructors is like overloading other function names. It is just the practice of defining more than one constructor for a class. There is also a copy constructor which you can see below in the example:
class B
{
public:
B(); // Default constructor
B( B const & other ); // Copy constructor
// ...
};

[Emma.J]

Constructor overloading is the same as function overloading in c++ and method overloading in java. The name of a constructor is the same as the name of a class. More than one Constructor having same name but different parameter are called and type is called constructor overloading. Here is an example of a constructor overloading:
class Demo
{
private:
int i;
public:
Demo(int i)
{
this->i = i;
}
Demo()
{
this->Demo(2)
}
};

[Enriqueta]

Constructor is called or created at the time of object creation. There are different types of constructor like default constructor, parameterized constructor, copy constructor.
Default constructor:
It is a constructor which is called when we don’t make any constructor in a program. The compiler by default call this constructor if he do not found any constructor in a program.
Parameterized constructor:
The constructor which contains parameter is called parameterized constructor.
Copy constructor:
A copy constructor for a class is a constructor that has an object of the class as its only parameter. It makes a new object that is a duplicate of the original object.
Constructer overloading:
Constructer overloading is same as the function overloading . you have to pass different argument to the parameter of a constructer at the time of execution i.e.. at the run time. Compiler matches the argument with constructer and call according to that.