using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
           try
 
            {
                string rows_a;
 
                string columns_a;
 
                string rows_b;
 
                string columns_b;
 
                string m;
 
                string n;
 
                int[,] a = new int[4, 4];
 
                int[,] b = new int[4, 4];
 
                int[,] c = new int[4, 4];
 
 
 
                int i = 0;
 
                int j = 0;
 
                int k = 0;
 
                int l = 0;
 
                c[i, j] = 0;
 
                int no_of_rows_a = 0;
 
                int no_of_columns_a = 0;
 
                int no_of_rows_b = 0;
 
                int no_of_columns_b = 0;
 
                Console.WriteLine(" Enter the number of rows for matrix A");
 
                rows_a = Console.ReadLine();
 
                no_of_rows_a = Convert.ToInt32(rows_a);
 
                Console.WriteLine(" Enter the number of columns for matrix A");
 
                columns_a = Console.ReadLine();
 
                no_of_columns_a = Convert.ToInt32(columns_a);
 
                Console.WriteLine(" Enter the number of rows for matrix B");
 
                rows_b = Console.ReadLine();
 
                no_of_rows_b = Convert.ToInt32(rows_b);
 
                Console.WriteLine(" Enter the number of columns for matrix B");
 
                columns_b = Console.ReadLine();
 
                no_of_columns_b = Convert.ToInt32(columns_b);
 
                Console.WriteLine(" The values of A matrix is :");
 
                for (i = 0; i < no_of_rows_a; i++)
 
                {
 
                    for (j = 0; j < no_of_columns_a; j++)
 
                    {
 
                        m = Console.ReadLine();
 
                        k = Convert.ToInt32(m);
 
                        a[i, j] = k;
 
                    }
 
                }
 
                Console.WriteLine(" The values of B matrix is :");
 
                for (i = 0; i < no_of_rows_b; i++)
 
                {
 
                    for (j = 0; j < no_of_columns_b; j++)
 
                    {
 
                        n = Console.ReadLine();
 
                        l = Convert.ToInt32(n);
 
                        b[i, j] = l;
 
                    }
 
                }
 
 
 
                Console.WriteLine(" The matrix format of A is ");
 
 
 
                for (i = 0; i < no_of_rows_a; i++)
 
                {
 
                    for (j = 0; j < no_of_columns_a; j++)
 
                    {
 
                        Console.Write(" {0}", a[i, j]);
 
                    }
 
                    Console.WriteLine("");
 
                }
 
                Console.WriteLine(" The matrix format of B is ");
 
                for (i = 0; i < no_of_rows_b; i++)
 
                    {
 
                        for (j = 0; j < no_of_columns_b; j++)
 
                        {
 
                            Console.Write(" {0}",b[i,j]);
 
                        }
 
                        Console.WriteLine("");
 
                }
 
                if (columns_a == rows_b)
 
                {
 
                    for (i = 0; i < no_of_rows_a; i++)
 
                    {
 
                        for (j = 0; j < no_of_columns_b; j++)
 
                        {
 
                            c[i, j] = (a[i, 0] * b[0, j]) + (a[i, 1] * b[1, j]);
 
                            Console.Write("  ");
 
                        }
 
                        Console.WriteLine("");
 
                    }
 
                }
 
                else
 
                {
 
                    Console.WriteLine("The matrix multiplication cannot be performed: Logic violation");
 
 
 
                }
 
                Console.WriteLine(" The resultant matrix is");
 
                for (i = 0; i < no_of_rows_a; i++)
 
                {
 
                    for (j = 0; j < no_of_columns_b; j++)
 
                    {
 
                        Console.Write(" {0}", c[i, j]);
 
                    }
 
                    Console.WriteLine();
 
                }
 
            }
 
           catch (Exception e)
           {
 
               Console.WriteLine(e.Message);
 
           }
    }
        }
    }