model 2012 Q5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _2D_array_class
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("enter the numbers of students");
            int students = int.Parse(Console.ReadLine());
            Console.WriteLine("enter the number of subjects");
            int subjects = int.Parse(Console.ReadLine());

            int[,] arr = new int[students, subjects];

            for (int i = 0; i < arr.GetLength(0); i++)
            {
                for (int j = 0; j <arr.GetLength(1); j++)
                {

                    Console.WriteLine("enter subject {0} for student {1}",j+1,i+1);
                    arr[i, j] = int.Parse(Console.ReadLine());

                }
            }
            /// 1 print the grade and the avarage for each subject
            /// colum sabt el row bytgyr
            Console.ForegroundColor = ConsoleColor.Green;
            for (int i = 0; i < subjects; i++)
            {
                int total = 0;
                double avarge = 0.0;

                Console.WriteLine("for subject {0}",(i+1));
                for (int j = 0; j < students; j++)
                {
                    Console.Write(arr[i,j]+"  ");
                    total += arr[i, j];
                }
                Console.WriteLine("the avarage is {0}",(total/(double)students));
            }
           //print the max and min
            int max = arr[0,0];
            int min = arr[0, 0];
            for (int i = 0; i < students; i++)
            {
                for (int j = 0; j < subjects; j++)
                {
                    if (arr[i, j] > max) max = arr[i, j];
                    if (arr[i, j]< min) min = arr[i, j];

                }
            }
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine("\n the max is {0} and the min is {1} \n \n ",max,min);
            Console.WriteLine("______________________");
            Console.ForegroundColor = ConsoleColor.Yellow;
        //over all zft حسبى الله و نعم الوكيل

        for (int k = 0; k < 100; k+=10)
            {
                int count = 0;
                for (int i = 0; i < students; i++)
                {
                    for (int j = 0; j < subjects; j++)
                    {
                        if (arr[i,j]<=k+9&&arr[i,j]>=k)
                        {
                            count++;
                        }

                    }
                }
                Console.Write("{0}-{1} : ",k,(k+9));
                for (int i = 0; i < count; i++)
                {
                    Console.Write("*");
                }

                Console.WriteLine();
            }


        }
    }
}