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 = 1; j < a.GetLength(1); j++)

            {

                sum = sum + a[i, j];

            }

​

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

            tempArray[i] = avg;

            sum = 0;

        }

​

        return tempArray;

    }

​

    public static void Main()

    {

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

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

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

        string[] names = new string[numOfStudents];

        Console.WriteLine("Please enter each name pressing enter after.");

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

        {

            names[i] = Console.ReadLine();

            Console.Clear();

        }

​

        Array.Sort(names);

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

        {

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

        }

​

        Console.WriteLine(" ");

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

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

        double[, ] grades = new double[numOfStudents, numOfGrades];

        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();

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

        double[] classAvg = arrayAvg(grades);

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

        {

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

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

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

            Console.Write(" Final Average: " + classAvg[i]);

            Console.WriteLine("\n___________________________________________");

        }

    }

}