using System;

public class Program

{

​

​

​

​

public static void Main(string[] args)

    {

        int i, j, rows, k = 1;

​

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

        Console.Write("Display the pattern like right angle triangle with number increased by 1:\n");

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

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

​

        Console.Write("Input number of rows : ");

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

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

        {

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

                Console.Write("{0} ", k++);

            Console.Write("\n");

        }  

    }