using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace zad7

{

    public class Program

    {

        public void Print_Rows(int[,] a, int n, int m)

        {

            Console.WriteLine("Извеждане на двумерния масив по редове: ");

            Console.WriteLine("============================");

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

            {

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

                {

                    Console.Write("{0, 5}", a[i, j]);

                }

                Console.WriteLine();

            }

            Console.WriteLine("============================");

        }

        public void Print_Cols(int[,] a, int n, int m)

        {

            Console.WriteLine("Извеждане на двумерния масив по колони: ");

            Console.WriteLine("============================");

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

            {

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

                {

                    Console.Write("{0, 5}", a[i, j]);

                }

                Console.WriteLine();

            }

            Console.WriteLine("============================");

        }

        public int Sum(int[,] a, int n, int m)

        {

            int sum = 0;

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

            {

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

                {

                    if (i == 0 || j == 0)

                        sum += a[i, j];

                    else if (i == (n - 1) || j == (m - 1))

                        sum += a[i, j];

                }

            }

            return sum;

        }

        public void Main(string[] args)

        {

            Console.WriteLine("==============");

            Console.Write("Брой редове: "); int n = int.Parse(Console.ReadLine());

            Console.Write("Брой колони: "); int m = int.Parse(Console.ReadLine());

            Console.WriteLine("==============");

            int[,] Matrix = new int[n, m];

            int num = 1;

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

            {

                bool isDiag = false;

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

                {

                    if ((i == j))

                    {

                        Matrix[i, j] = num; num++;

                        isDiag = true;

                    }

                    else if (isDiag == false)

                    {

                        Matrix[i, j] = 0;

                    }

                    else { Matrix[i, j] = num; num++; } 

                }

            }

            Print_Cols(Matrix, n, m);

            Console.ReadLine();

        }

    }

}

​