Learn Little bit More

 using System; public class Program { public static int  Factorial(int num) { int total=0; for(int i=1;i<=num;i++) {            total=total*i; } return total; } public static void Main() { int nums = Convert.ToInt32(Console.ReadLine()); Console.WriteLine(Factorial(nums)); } }

 using System; public class Program { public static int  LargestFour(int[] arr) { Array.Sort<int>(arr);         Array.Reverse(arr); int total=0; for (int n=0;n<5; n++)         {                total += arr[n];                      } return total; } public static void Main() { string test = Console.ReadLine(); int[] nums =   Array.ConvertAll(test.Split(','), int.Parse); Console.WriteLine(LargestFour(nums)); } }