تحديات برمجيةالتحدي الأول - حل التمرين الخامس بلغة C#

using System;

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

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

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

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

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

            Console.WriteLine();
        }

        Console.ReadKey();
    }
}

Enter the number of lines: 5
Enter the number of columns: 10
    **********
   **********
  **********
 **********
**********