C# program to print pascal triangle

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace ConsoleApplication1

{

    class Program

    {

        static void Main(string[] args)

        {

            Console.Write("Enter the number of rows: ");

            string input = System.Console.ReadLine();

            int n = Convert.ToInt32(input);

            for (int y = 0; y < n; y++)

            {

                int c = 1;

                for (int q = 0; q < n - y; q++)

                {

                    Console.Write(" ");

                }

                for (int x = 0; x <= y; x++)

                {

                    Console.Write(" {0:D} ", c);

                    c = c * (y - x) / (x + 1);

                }

                Console.WriteLine();

                Console.WriteLine();

            }

            Console.WriteLine();

            Console.ReadLine();

        }

    }

}

Output