تحديات برمجيةالتحدي الثالث - حل التمرين الأول بلغة C#

using System;

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

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

        for (int i = 1; i <= n; i++)
        {
            if (i <= n / 2)
            {
                for (int k = 1; k < (n / 2) - i + 2; k++)
                {
                    Console.Write(" ");
                }
                Console.Write("*");

                for (int j = 1; j < (i * 2) - 1; j++)
                {
                    Console.Write("*");
                }
            }
            else
            {
                for (int k = 1; k < i - (n / 2); k++)
                {
                    Console.Write(" ");
                }

                Console.Write("*");

                for (int j = 1; j <= (n * 2) - (i * 2); j++)
                {
                    Console.Write("*");
                }
            }
            Console.WriteLine();
        }

        Console.ReadKey();
    }
}        

using System;

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

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

        for (int i = 1; i <= (n / 2) + 1; i++)
        {
            for (int k = 1; k < (n / 2) - i + 2; k++)
            {
                Console.Write(" ");
            }

            Console.Write("*");

            for (int j = 1; j < (i * 2) - 1; j++)
            {
                Console.Write("*");
            }

            Console.WriteLine();
        }

        for (int i = 1; i <= (n / 2); i++)
        {
            for (int k = 1; k <= i; k++)
            {
                Console.Write(" ");
            }

            for (int j = 1; j < ((n / 2) * 2) - (i * 2) + 2; j++)
            {
                Console.Write("*");
            }

            Console.WriteLine();
        }

        Console.ReadKey();
    }
}

Enter the number of lines: 9
    *
   ***
  *****
 *******
*********
 *******
  *****
   ***
    *