using System;

public class Program

{

    public static void Main()

    {

        int[,] a = new int[2,2] ;

        int[,] b = new int[2,2] ;

        //int [,]c;   ------ empty decl.

        Console.WriteLine("Enter Matrix A");

        for( int i=0; i<=a.GetUpperBound(0);i++)

        {

            for(int j=0; j <= a.GetUpperBound(1);j++)

            {

​

                a[i,j] = Convert.ToInt16(Console.ReadLine());

            }

            Console.Write("\n");

        }

        Console.WriteLine("Enter Matrix B");

        for( int i=0; i<=b.GetUpperBound(0);i++)

        {

            for(int j=0; j <= b.GetUpperBound(1);j++)

            {

                b[i,j] = Convert.ToInt16(Console.ReadLine());

            }

            Console.Write("\n");

        }

                Console.WriteLine("Matrix A");

        for( int i=0; i<=a.GetUpperBound(0);i++)

        {

            for(int j=0; j <= a.GetUpperBound(1);j++)

            {

                Console.Write(a[i,j]);

                Console.Write(" ");

            }

            Console.Write("\n");

        }

        Console.WriteLine("Matrix B");

        for( int i=0; i<=b.GetUpperBound(0);i++)

        {

            for(int j=0; j <= b.GetUpperBound(1);j++)

            {

                Console.Write(b[i,j]);

                Console.Write(" ");

            }

            Console.Write("\n");

        }

        Console.WriteLine("After addition\n");

        for( int i=0; i<=a.GetUpperBound(0);i++)

        {

            for(int j=0; j <= a.GetUpperBound(1);j++)

            {

                Console.Write(a[i,j] + b[i,j]);

                Console.Write(" ");

            }

            Console.Write("\n");

        }

        //Console.Read();

    }

}