Fimd sum in array

//10.Write a program that finds in given array of integers a sequence of given
//sum S (if present).
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _10.sequenceGivenSum
{
    class Program
    {
        static void Main(string[] args)
        {
            int S;
            int sum;
            int firstPos;
            int counter;
            int[] array;
            Input(out S, out sum, out firstPos, out counter, out array);

            for (int i = 0; i < array.Length; i++)
            {
                sum += array[i];
                counter++;

                if (sum==S)
                {
                    for (int j = 0; j < counter; j++)
                    {
                        Console.Write("{0} ",array[firstPos]);
                        firstPos++;
                    }
                    break;
                }

                else
                {
                    while (sum>S)
                    {
                        sum -= array[firstPos];
                        firstPos++;
                        counter--;
                    }

                    if (sum == S && counter>0)
                    {
                        for (int j = 0; j < counter; j++)
                        {
                            Console.Write("{0} ", array[firstPos]);
                            firstPos++;
                        }
                        return;
                    }
                }
            }

            Console.WriteLine("No subsequence sums to {0}", S);
        }

        private static void Input(out int S, out int sum, out int firstPos, out int counter, out int[] array)
        {
            Console.WriteLine("Enter S:");
            S = int.Parse(Console.ReadLine());
            sum = 0;
            firstPos = 0;
            counter = 0;
            Console.WriteLine("Enter the size of the array:");
            int size = int.Parse(Console.ReadLine());

            array = new int[size];
            for (int i = 0; i < array.Length; i++)
            {
                array[i] = int.Parse(Console.ReadLine());
            }
        }
    }
}