using System;

public class Program

{

    public static void Main()

    {

        string usersInput = "-1";

        int i,j,n;//Variable used in the program; i= rows, j= columns, n= numbers of rows

        Console.Write("\n\n");

        Console.Write("Display the pattern like pyramid with asterisks:\n");

        Console.Write("-----------------------------------------------------------");

        Console.Write("\n\n");

            while( true || usersInput == "-1")

            {

                Console.Write("Input number of rows for this pattern (Type <-1> to exit): ");

                n = Convert.ToInt32(Console.ReadLine());

                usersInput=Console.ReadLine();

                if(usersInput== "-1")

                {

                    Console.Write("Program End");//Terminates the program

                    Console.WriteLine();

                    return;

                }

                for(i=0;i<n;i++)//Main program

                {

                    for(j=1;j<=n-i;j++)//Inputs spaces in a specified space in the program

                        Console.Write(" ");

                    for(j=1;j<=2*i+1;j++)//Inputs asterisks in a specified space in the program

                        Console.Write("*");

                    Console.Write("\n");

                }

            }

    }

}