17

using System;

namespace ConsoleApp3
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int matrixRow = 3;
            int matrixColumn = 3;
            int[,] matrix = new int[matrixRow, matrixColumn];

            Random random = new Random();
            int randomMaxRange = 100;
            int randomMinRange = 11;

            int rowIndex;
            int columnIndex;

            int summRowIndex = 1;
            int multColumnIdex = 0;
            int summResult = 0;
            int multResult = 1;

            for (rowIndex = 0; rowIndex < matrix.GetLength(0); rowIndex++)
            {
                for (columnIndex = 0; columnIndex < matrix.GetLength(1); columnIndex++)
                {
                    matrix[rowIndex, columnIndex] = random.Next(randomMinRange, randomMaxRange);
                    Console.Write(matrix[rowIndex, columnIndex] + " ");

                    if (rowIndex == summRowIndex)
                    {
                        summResult += matrix[rowIndex, columnIndex];
                    }

                    if (columnIndex == multColumnIdex)
                    {
                        multResult *= matrix[rowIndex, columnIndex];
                    }
                }
                Console.WriteLine();
            }
            Console.WriteLine($"\nСумма второй строки равна = {summResult}.\n" +
                   $"Произведение первого столбца = {multResult}.");
        }
    }
}