Constructor/Method outside the class

Defining a constructor/method outside the class - 

      For defining a constructor or method outside the class four things should be kept in mind - 

1. Return Type
2. Class Name
3. Scope Resolution Operator
4. Constructor/Method name

Note - Constructors/Destructors don't have a return type, so while defining constructors/destructors outside the class return type is not specified.

Syntax - (return type) (class name)(scope resolution operator)(constructor/method name)

For Example - Consider the definition of class student that a constructor, method and destructor.

class student

{

    private : 

              int id ;

    public :

              student ( );

              void add_student ( );

              ~student ( );

}

---

Implementing constructor student ( ) outside the class -

student : : student ( )

{

}

---

Implementing method add_student ( ) outside the class - 

void student : : student ( )

{

}

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Implementing destructor student ( ) outside the class - 

student : : ~student ( )

{

}

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