SubsetSumIfZero

using System;

class CheckSumOfSubsets
{
    static void Main()
    {
        Console.WriteLine("Please insert the five members of the set.\n");
        string consoleInput;

        Console.Write("a: ");
        consoleInput = Console.ReadLine();
        int a = int.Parse(consoleInput);

        Console.Write("b: ");
        consoleInput = Console.ReadLine();
        int b = int.Parse(consoleInput);

        Console.Write("c: ");
        consoleInput = Console.ReadLine();
        int c = int.Parse(consoleInput);

        Console.Write("d: ");
        consoleInput = Console.ReadLine();
        int d = int.Parse(consoleInput);

        Console.Write("e: ");
        consoleInput = Console.ReadLine();
        int e = int.Parse(consoleInput);
        Console.WriteLine();

        byte counter = 0;

        //Checking for the whole set
        if (a + b + c + d + e == 0)
        {
            Console.WriteLine("The sum of the whole set is zero!");
            counter++;
        }

        //Checking every subset of two members
        if (a + b == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a) and {1}(b) is 0", a, b);
        }
        if (a + c == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a) and {1}(c) is 0", a, c);
        }
        if (a + d == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a) and {1}(d) is 0", a, d);
        }
        if (a + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a) and {1}(e) is 0", a, e);
        }
        if (b + c == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(b) and {1}(c) is 0", b, c);
        }
        if (b + d == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(b) and {1}(d) is 0", b, d);
        }
        if (b + e == 0)
        {
            counter++;
            counter++;
            Console.WriteLine("The sum of {0}(b) and {1}(e) is 0", b, e);
        }
        if (c + d == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(c) and {1}(d) is 0", c, d);
        }
        if (c + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(c) and {1}(e) is 0", c, e);
        }
        if (d + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(d) and {1}(e) is 0", d, e);
        }

        //Checking every subset of three members
        if (a + b + c == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a), {1}(b) and {2}(c) is 0", a, b, c);
        }
        if (a + b + d == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a), {1}(b) and {2}(d) is 0", a, b, d);
        }
        if (a + b + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a), {1}(b) and {2}(e) is 0", a, b, e);
        }
        if (a + c + d == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a), {1}(c) and {2}(d) is 0", a, c, d);
        }
        if (a + c + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a), {1}(c) and {2}(e) is 0", a, c, e);
        }
        if (a + d + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a), {1}(d) and {2}(e) is 0", a, d, e);
        }
        if (b + c + d == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(b), {1}(c) and {2}(d) is 0", b, c, d);
        }
        if (b + c + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(b), {1}(c) and {2}(e) is 0", b, c, e);
        }
        if (b + d + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(b), {1}(d) and {2}(e) is 0", b, d, e);
        }
        if (c + d + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(c), {1}(d) and {2}(e) is 0", c, d, e);
        }

        //Checking for everysubset of four members
        if (a + b + c + d == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a), {1}(b), {2}(c) and {3}(d) is 0", a, b, c, d);
        }
        if (a + b + c + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a), {1}(b), {2}(c) and {3}(e) is 0", a, b, c, e);
        }
        if (a + b + d + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a), {1}(b), {2}(d) and {3}(e) is 0", a, b, d, e);
        }
        if (a + c + d + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(a), {1}(c), {2}(d) and {3}(e) is 0", a, c, d, e);
        }
        if (b + c + d + e == 0)
        {
            counter++;
            Console.WriteLine("The sum of {0}(b), {1}(c), {2}(d) and {3}(e) is 0", b, c, d, e);
        }
        if (counter == 1)
        {
            Console.WriteLine("\nThere is 1 subset with sum equal to zero!");
        }
        else
        {
            Console.WriteLine("\nThere are {0} subsets with sum equal to zero!", counter);
        }
    }

}