Member Function Definition

 

Member functions:

Member functions are the functions that are included within the class.

Member functions can be defined in two places:

·       Inside the class declaration

·       Outside the class declaration

Inside the class declaration:

class date

{

            private:

                        int day, month, year;

            public:

                        void getdata()

                        {

                                    cin>>day>>month>>year;

                        }

                        void putdata()

                        {

                                    cout<<day<<month<<year;

                        }

};

 

In this example to member functions getdata() and putdata() are defined inside the class declaration.

 

Outside the class declaration:

Syntax:

return_type class_name::member_function_name(arguments)

{

            // member function code

}

Ex:

class date

{

            private:

                        int day, month, year;

            public:

                        void getdata();

                        void putdata();

};

void date::getdata()

{

            cin>>day>>month>>year;

}

void date::putdata()

{

            cout<<day<<month<<year;

}

:: this operator is called scope resolution operator.

This operator is used to define member function outside the class.

This operator links the class name with the member function.