using System;

​

public class Program

{

    public static double[] arrayAvg(double[, ] a)

    {

        double[] tempArray = new double[a.GetLength(0)];

        double sum = 0;

        for (int i = 0; i < a.GetLength(0); i++)

        {

            for (int j = 0; j < a.GetLength(1); j++)

            {

                sum = sum + a[i, j];

            }

​

            double avg = sum / (a.GetLength(1));

            tempArray[i] = avg;

            sum = 0;

        }

​

        return tempArray;

    }

​

    public static void Main()

    {

        string restart = "placeholder";

        while (restart != "q")

        {

            Console.Clear();

            Console.Write("How many names do you want to enter");

            int name = int.Parse(Console.ReadLine());

            string[] names = new string[name];

            for (int i = 0; i < name; i++)

            {

                Console.WriteLine("Please enter name " + (i + 1));

                names[i] = Console.ReadLine();

            }

​

            Console.Clear();

            Array.Sort(names);

            Console.Write("How many grades would you like to enter per student?");

            int grade = int.Parse(Console.ReadLine());

            double[, ] grades = new double[name, grade];

            for (int i = 0; i < grades.GetLength(0); i++)

            {

                Console.WriteLine("Please enter the grades for " + names[i]);

                for (int j = 0; j < grades.GetLength(1); j++)

                {

                    grades[i, j] = double.Parse(Console.ReadLine());

                }

            }

​

            Console.Clear();

            double[] classAvg = arrayAvg(grades);

            Console.WriteLine("Your gradebook looks like this:");

            for (int i = 0; i < name; i++)

            {

                Console.Write("  " + names[i] + " | ");

                for (int j = 0; j < grade; j++)

                {

                    Console.Write(" " + grades[i, j] + " | ");

                }

​

                Console.WriteLine(" Your Final Average is | " + classAvg[i]);

                Console.WriteLine("\n_____________________________________________________");

            }

​

            Console.WriteLine();

            Console.WriteLine("The following students have failed");

            for (int i = 0; i < classAvg.Length; i++)

            {

                if (classAvg[i] < 65)

                {

                    Console.WriteLine();

                    Console.WriteLine(names[i]);

                }

            }

​

            Console.WriteLine();

            Console.WriteLine("press q to quit or anything else to use the program again.");

            restart = Console.ReadLine();

            Console.Clear();

        }

    }

}