Creating C Program with Friend Functions and Function Overloading

#include 

using namespace std;





int inputArraySetA[20];

int inputArraySetB[20];

//int inputArrayUnion[20];

int sizeSetA = 0;

int sizeSetB = 0;

//int sizeUnion = 0;

int temp = 0;









class Set

{

    protected:

        int x;

        int y;

    public:

        Set();

        Set(int px,int py);

        void AddElement(int v);

        void RemoveElement(int v);

        void Print();

        friend void Union(int inputArraySetA[20], int inputArraySetB[20]);

        friend void Intersect(int inputArraySetA[20], int inputArraySetB[20]);

        friend void Minus(int inputArraySetA[20], int inputArraySetB[20]);

        

        

};





//--------------------------------------------------------------------------------------------------------------------    

void Union(int inputArraySetA[20], int inputArraySetB[20])

{





}





//--------------------------------------------------------------------------------------------------------------------



int main()

{

     

    

        

        cout << "Enter First set of numbers, (-1) to quit: "<        for (int i = 0; i < 20; i++) 

        {

            cin >> temp;

            if (temp == -1) 

                {

                    break;

                } 

            else 

                {

                    inputArraySetA[i] = temp;

                    sizeSetA++;

                }

        }

        

    



        cout << "Enter Second set of numbers, (-1) to quit: "<        for (int i = 0; i < 20; i++) 

        {

            cin >> temp;

            if (temp == -1) 

                {

                    break;

                } 

            else 

                {

                    inputArraySetB[i] = temp;

                    sizeSetB++;

                }

        }



   

       cout << "Set A is ";

        for (int i = 0; i < sizeSetA; i++) 

            {

                cout << inputArraySetA[i] << " ";

            }

        cout << "\nSet B is ";

        for (int i = 0; i < sizeSetB; i++) 

            {

                cout << inputArraySetB[i] << " ";

            }





        return 0;

}