Использование локальной переменной, которой не присвоено значение - C# (177689)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string n, max, min, x, c,m ;
            int n1, max1, min1, x1, c1,m1,b;
            Console.WriteLine("Vvedite dlinnu masiva");
            n = Console.ReadLine();
            Console.WriteLine("Vvedite ogranichenie sverhu");
            max = Console.ReadLine();
            Console.WriteLine("Vvedite ogranichenie snizu");
            min = Console.ReadLine();
            n1 = Convert.ToInt32(n);
            max1 = Convert.ToInt32(max);
            min1 = Convert.ToInt32(min);
            int[] arr = new int[n1];
            Random rand = new Random();
            for (int i = 0; i < arr.Length; i++)
            {
                arr[i] = rand.Next(min1, max1);
            }
            for (int g = 0; g < arr.Length; g++)
            {
                if (arr[g] == 0)
                {
                    x = Console.ReadLine();
                    x1 = Convert.ToInt32(x);
                    arr[g] = x1;
                }
            }
            Console.WriteLine("Vvedite nachalniy element podmasiva");
            c = Console.ReadLine();
            c1 = Convert.ToInt32(c);
            Console.WriteLine("Vvedite konechniy element podmasiva");
            m = Console.ReadLine();
            m1 = Convert.ToInt32(m);
            int[] arr1 = new int[m1-c1+1];
            Array.ConstrainedCopy(arr, c1, arr1, 0, m1);
            Console.WriteLine(arr1.Length);
            int max2;
            for (int i = 0; i < arr1.Length; ++i)
            {
                if (arr1[i] > arr1[i++])
                {
                     max2 = arr1[i];
                    
                }
                else
                {
                     max2 = arr1[i++];
                    
                }
                b = max2;
            }
            Console.WriteLine(b);
            Console.Read();
 
        }
    }
}