Exercise9SumOfSubsetIs0

using System;

class Exercise9SumOfSubsetIs0
{
    static void Main()
    {
        int[] input = new int[5];
        for (int i = 0; i < 5; i++)
        {
            bool checkInput = false;
            while (!checkInput)
            {
                Console.Write("\nPlease input integer N{0}: ", i + 1);
                checkInput = int.TryParse(Console.ReadLine(), out input[i]);
                if (checkInput)
                {
                    continue;
                }
                Console.WriteLine("\nWrong input data, try again!");
            }
        }
        Console.WriteLine("\n\n\nSets with sum equal to zero:\n");
        for (int position = 0; position < 5; position++)
        {
            for (int setSize = 2; setSize <= 5; setSize++)
            {
                if ((position + setSize) <= 5)
                {
                    switch (setSize)
                    {
                        case 2:
                            {
                                if ((input[position]+input[position+1]) == 0)
                                {
                                    Console.WriteLine("\nThe sum of set {0}, {1} is equal to zero!" ,input[position], input[position+1]);
                                }
                            }
                            break;
                        case 3:
                            {
                                if ((input[position] + input[position + 1] + input[position + 2]) == 0)
                                {
                                    Console.WriteLine("\nThe sum of set {0}, {1}, {2} is equal to zero!", input[position], input[position + 1], input[position + 2]);
                                }
                            }
                            break;
                        case 4:
                            {
                                if ((input[position] + input[position + 1] + input[position + 2] + input[position + 3]) == 0)
                                {
                                    Console.WriteLine("\nThe sum of set {0}, {1}, {2}, {3} is equal to zero!", input[position], input[position + 1], input[position + 2], input[position + 3]);
                                }
                            }
                            break;
                        case 5:
                            {
                                if ((input[position] + input[position + 1] + input[position + 2] + input[position + 3] + input[position + 4]) == 0)
                                {
                                    Console.WriteLine("\nThe sum of set {0}, {1}, {2}, {3}, {4} is equal to zero!", input[position], input[position + 1], input[position + 2], input[position + 3], input[position + 4]);
                                }
                            }
                            break;
                    }
                }
            }
        }
        Console.WriteLine();
    }
}