using System;

public class Program

{

    static void drawPyramid(int n){

        Console.WriteLine("\n");

        for(int a = 1; a <= n; a++){

            for(int b = a;  b <= n; b++){

                Console.Write(" ");

            }

            for(int c = 1; c <= 2 * a - 1; c++){

                Console.Write("*" + "");

            }

            Console.WriteLine();

        }

        Console.WriteLine("\n\nHere is your pyramid that has " + n + " layers");

    }

    public static void Main()

    {   

        Console.WriteLine("Do you want to draw a Pyramid?");

        Console.WriteLine("| Yes | No |");

        string cmd = Console.ReadLine();

        if(cmd == "Yes"){

            Console.WriteLine("How many layers do you want your pyramid to have?");

            int a = Convert.ToInt32(Console.ReadLine());

            drawPyramid(a); 

        } 

        else if(cmd == "No"){

            Console.WriteLine("\n\nUnderstandable, have a good day");                 

        }

        else{

            Console.WriteLine("\n\nIt's a 'Yes' or 'No' question");

            Console.WriteLine("How could you fail that");

        }

​

    }

}