RectangleWithAsterixesInTheMiddle_Drawing

namespace ConsoleApp274
{
    using System;

    class Program
    {
        static void Main(string[] args)
        {
            int number = int.Parse(Console.ReadLine());

            int width = number * 2;

            int innerLength = 0;
            if(number % 2 == 0)
            {
                innerLength = number - 1;
            }
            else
            {
                innerLength = number;
            }

            int spaces = width - 2;

            Console.WriteLine(new string('%', width));
            for (int i = 1; i <= innerLength; i++)
            {
                if(i != innerLength / 2 + 1)
                {
                    Console.WriteLine("{0}{1}{0}", new string('%', 1), new string(' ', spaces));
                }
                else
                {
                    Console.WriteLine("{0}{1}{2}{1}{0}", new string('%', 1), new string(' ', (spaces / 2) - 1), new string('*', 2));
                }
            }
            Console.Write(new string('%', width));
    }
}