Overloade << og >>

Hej,
Jeg har lavet en sequence class der bruger dynamic arrays.
Mit problem er hvordan jeg overloader << >>, saaledes at jeg kan bruge cout og cin i min .cpp file. Jeg har pasted min class definition (haaber det er nok, ellers paster jeg ogsaa funktionerne)og har ogsaa indsat mit gaet for prototyper for << >>, hvilket er foelgende:
istream& operator >>( istream& ins, sequence& target);
ostream& operator <<( ostream& outs, sequence& display);

Men er der en der kan hjaelpe mig med implmentionen af de to funktioner, saaledes at jeg kan bruge min cout og cin i cpp i filen.

Paa forhaand tak!

//****************************************************
#ifndef TESTSEQUENCE_H
#define TESTSEQUENCE_H
#include <stdlib.h> 
    class sequence
    {
    public:
        // TYPEDEFS and MEMBER CONSTANTS
        typedef double value_type;
        typedef size_t size_type;
        enum {DEFAULT_CAPACITY = 30};

        // CONSTRUCTOR
        sequence(size_type initial_capacity = DEFAULT_CAPACITY);
        ~sequence ();
        sequence (const sequence& source);

        // MODIFICATION MEMBER FUNCTIONS
        void start ( );
        void advance ( );
        void insert (const value_type& entry);
        void attach (const value_type& entry);
        void remove_current ( );

        void add_front (const value_type& entry);
        void remove_front ();
        void add_end (const value_type& entry);
      void make_current ();
        void resize (size_type new_capacity);
        void sequence::reserve(size_type new_capacity);
               
        // OPERATOR OVERLOADED FUNCTIONS
        void sequence::operator +=(const sequence& addend);
        value_type operator [] (size_t index) const;
        void operator=(const sequence& source);

        // CONSTANT MEMBER FUNCTIONS
        size_type size( ) const;
        bool is_item( ) const;
        value_type current( ) const;
       

    private:
     
    value_type *data;
    size_type used;
    size_type capacity;
    size_type current_index;

    };

// NONMEMBER FUNCTIONS
sequence operator +(const sequence& s1, const sequence& s2);
void print_menu( );
char get_user_command( );
void show_sequence(sequence display);
double get_number( );
istream& operator >>( istream& ins, sequence& target);
ostream& operator <<( ostream& outs, sequence& display);

#include "testsequence.cxx" // include implementation file

#endif