gistfile1.cs

using System;

namespace House
{
    class House
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int counter=1;
            int roofEdge = n / 4;

            Console.WriteLine("{0}{1}{0}",new string('.',n/2),"*");
            for (int i = 1; i <= n - 4; i = i + 2)
            {
                Console.WriteLine("{0}{1}{2}{1}{0}",new string('.',(n/2-counter)), "*", new string('.',i));
                counter++;
            }
            Console.WriteLine("{0}", new string('*', n));
            for (int a = 1; a <= (n / 2 - 1); a++)
            {
                Console.WriteLine("{0}{1}{2}{1}{0}", new string('.',n/4), "*",new string('.',(n-2*roofEdge-2)));
            }
            Console.WriteLine("{0}{1}{0}", new string('.', n / 4), new string('*',(n - 2 * roofEdge)));
        }
    }
}