mithilesh kumar singh

A
B B
C C C
D D D D
E E E E E E

class Program

    {

        static void Main(string[] args)

        {

                      

            for (int row = 65; row <= 70; row++)

            {

                for (int coll = 65; coll <= row; coll++)

                {

                                      

                    Console.Write(Convert.ToChar(row));

                }

                              

                Console.WriteLine();

            }

            Console.ReadLine();

        }

    }