[Jumpstart C#] loops demo - Triangle

using System;

class Triangle
{
    static void Main()
    {
        Console.Write("n = ");
        int n = Int32.Parse(Console.ReadLine());
        Console.WriteLine();

        for (int row = 1; row <= n; row++)
        {
            for (int col = 1; col <= row; col++)
            {
                Console.Write("{0} ", col);
            }
            Console.WriteLine();
        }

    }
}