using System;

using System.Linq;

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());

    string[] names = new string[students];

    Console.WriteLine("Type your students names, pressing enter after each one.");

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

    { names[i] = Console.ReadLine();

    }

    Array.Sort(names);

    Console.WriteLine("How many grades for each student?");

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

    double[,]grades = new double[students, 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());

    }

    double[]classAvg = arrayAvg(grades);

    Console.Clear();    

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

    double[]myavg = arrayAvg(grades);

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

    {

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

        for(int j = 0; i<numofgrades; j++)

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

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

        Console.WriteLine("\n____________________________________________");

        }

    }

}