تحديات برمجيةالتحدي السابع - حل التمرين الأول بلغة C#

using System;

class Program
{
    static void Main(string[] args)
    {
        int n;

        do
        {
            Console.Write("Enter an odd number as the number of lines: ");
            n = int.Parse(Console.ReadLine());
        }
        while (n <= 0 || n % 2 == 0);

        for (int i = 1; i <= n; i++)
        {
            for (int j = 1; j <= n; j++)
            {
                if (j == 1 || j == n || i == j || j == n - i + 1)
                {
                    Console.Write("*");
                }
                else
                {
                    Console.Write(" ");
                }
            }
            Console.WriteLine();
        }

        Console.ReadKey();
    }
}

Enter an odd number as the number of lines: 11
*         *
**       **
* *     * *
*  *   *  *
*   * *   *
*    *    *
*   * *   *
*  *   *  *
* *     * *
**       **
*         *