kt2.2

namespace LangProgKT3
{

    class Matrix
    {
        protected internal int[,] array;
        private int N;
        protected internal Matrix(int n=10)
        {
            var random = new Random();
            this.array = new int[n, n];
            this.N = n ;
            for (int i = 0; i < n; i++)
                for (int j = 0; j < n; j++)
                    this.array[i, j] = random.Next(-10, 10);
        }

        protected internal void print()
        {
            for (int i = 0; i < this.N; i++)
            {
                for (int j = 0; j < this.N; j++)
                    Console.Write(this.array[i,j] + "   ");
                Console.WriteLine();
            }
        }

        protected internal void fill_zero()
        {
            for (int i = 0; i < this.N/2; i++)
            {
                for (int j = 0; j < this.N / 2; j++)
                    if (this.array[i, j] < 0) this.array[i, j] = 0;
            }
        }
        protected internal void fill_one()
        {
            for (int i = this.N / 2; i < this.N  ; i++)
            {
                for (int j = this.N / 2; j < this.N  ; j++)
                    if (this.array[i, j] > 0) this.array[i, j] = 1;
            }
        }

    }

    class Program
    {
        static void Main(string[] args)
        {

            Matrix matrix = new Matrix(8);
            matrix.print();
            Console.WriteLine();
            matrix.fill_one();
            matrix.fill_zero();
            matrix.print();
            Console.ReadLine();
        }
    }
}