Laba 8, case 14

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

namespace laba8_case14
{
    class Program
    {
        static void Main(string[] args)
        {
            //Task 1
            Random rnd = new Random();
            Console.Write("M:");
            int m = Convert.ToInt32(Console.ReadLine());
            Console.Write("N:");
            int n = Convert.ToInt32(Console.ReadLine());
            int[,] M = new int[m, n];           
            for (int i = 0; i < m; i++)
            {
                for (int j = 0; j < n; j++)
                {
                    M[i, j] = rnd.Next(9);
                }
            }
            for (int i = 0; i < m; i++)
            {
                for (int j = 0; j < n; j++)
                {
                    Console.Write("{0} ", M[i, j]);
                }
                Console.WriteLine();
            }

            for (int i = 0; i < n; i = i+2)
            {
                Console.Write("Row {0}: ", i+1);
                for (int e = 0; e < m; e++)
                {
                    Console.Write(M[e, i]);
                }
                Console.WriteLine();
            }
            Console.WriteLine();

           //Task 2 
            Console.Write("M:");
            m = Convert.ToInt32(Console.ReadLine());
            Console.Write("N:");
            n = Convert.ToInt32(Console.ReadLine());
            int[,] M2 = new int[m, n];

            for (int i = 0; i < m; i++)
            {
                for (int j = 0; j < n; j++)
                {
                    M2[i, j] = rnd.Next(9);
                }
            }


            for (int i = 0; i < m; i++)
            {
                for (int j = 0; j < n; j++)
                {
                    Console.Write("{0} ", M2[i, j]);
                }
                Console.WriteLine();
            }           
            int summ = 0;

            for (int i = 0; i < m; i++ )
            {
                for(int j =0; j<n;j++) 
                {
                    summ = summ + M2[i, j];
                }
                Console.Write("String {0}: {1} \n", i+1, summ);
                summ = 0;
            }
            Console.WriteLine();

            //Task 3 
            Console.WriteLine("M:");
            m = Convert.ToInt32(Console.ReadLine());
            double[,] M3 = new double[m, m];
            for (int i = 0; i < m; i++)
            {
                for (int j = 0; j < m; j++)
                {
                    M3[i, j] = rnd.Next(9);
                }
            }


            for (int i = 0; i < m; i++)
            {
                for (int j = 0; j < m; j++)
                {
                    Console.Write("{0} ", M3[i, j]);
                }
                Console.WriteLine();
            }          

            double summ2 = 0;
            
            for (int i = 0; i < m; i++)
            {
                summ2 = summ2 + M3[i, i];
                for (int j = 0; j < m; j++)
                {
                    if (i<j)
                    {
                       M3[j, i] = Math.Pow(M3[j, i], 2);
                    }
                }
            }
            Console.Write("Total diogonal: {0}", summ2);
            Console.WriteLine();
            Console.WriteLine("New matrix:");
            for (int i = 0; i < m; i++)
            {
                for (int j = 0; j < m; j++)
                {
                    Console.Write("{0} ", M3[i, j]);
                }
                Console.WriteLine();
            }     

                Console.ReadLine();
        }
    }

}