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Constructors in c++

                                                    Constructors
In c++ provides a special member function called the constructor.which enable the object to inilaze when it is created.It is a special function its name is the same as class name.
The constructor function is invoked whenever an object of its associated class is created.It is called constructor because it construct the values of data members of the class.In constructor that accepts no parameter is called the default constructor.If no such constructor is define than the compiler supplies a default constructor.The constructor that accept parameters as a argument is called parameterized constructor.
Characterstatices :-
Ø     Constructors should be decleare in the public section.constructor are invoke automatically when the objects are created.They do not have return types, not even void therefore a constructor cannot return values.
Ø     Constructor can not be inherited,but a drived class can call the base class constructor.
Ø     Like c++ function a constructor can have default arguments.
Ø     Constructors cannot be virtural
Ø     It cannot refer the address of a contructor.
Ø     An object with a constructor or distructor cannot be news as a member of union.

Ø     A constructor make implicit calls to the operators new and delete.when memory allocation/deallocation is required.

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