using System;

​

public class Program

{

    public static void Main()

    {

        int i, j, n;

        Console.WriteLine("enter n value");

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

        for (i = 1; i <= n; i++)

        {

            for (j = 1; j <= i; j++)

            {

                Console.Write("*");

            }

​

            Console.Write("\n");

        }

    }

}