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()

    {

        Console.WriteLine("How many students do you have?");

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

        Console.Clear();

        Console.WriteLine("Now, enter your students names.");

        string[] names = new string[students];

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

        {

            names[i] = Console.ReadLine();

        }

​

        Array.Sort(names);

        Console.WriteLine();

        Console.WriteLine("How many grades per student will you have?");

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

        double[, ] grades = new double[names.Length, numberofgrades];

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

        {

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

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

            {

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

            }

        }

​

        Console.Clear();

        double[] average = arrayAvg(grades);

        Console.WriteLine("This is what your gradebook will look like:");

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

        {

            Console.WriteLine();

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

            Console.WriteLine("Final average: " + average[i]);

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

            {

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

            }

​

            Console.WriteLine();

        }

​

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

        {

            if (average[i] < 65)

            {

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

                Console.WriteLine();

            }

            else if (average[i] > 90)

            {

                Console.WriteLine();

                Console.WriteLine(names[i] + " is on the Honor Role.");

                Console.WriteLine();

            }

        }

    }

}