public static void Main()
Console.WriteLine("enter number of rows and column");
row=int.Parse(Console.ReadLine());
col=int.Parse(Console.ReadLine());
int [ , ] matrix=new int[row , col];
Console.WriteLine("matrix length is ={0}",matrix.Length);
matrix[i,j]=int.Parse(Console.ReadLine());
Console.WriteLine("enter elements of matrix ={0}",matrix.Length);
Console.Write(" {0}",matrix[i,j]);
daig1=daig1 + matrix[i,j];
Console.WriteLine(" sum of first daigonal element is ={0}",daig1);
daig2=daig2 + matrix[i,j];
Console.WriteLine(" sum of second daigonal element is ={0}",daig2);