03.NewHeart_traning

using System;

class Heart2
{
    static void Main()
    {
        Console.WriteLine("Heart size: ");
        byte size = byte.Parse(Console.ReadLine());
        string heart = "♥";                              //9829

        if (size % 2 != 0)
        {
            for (byte i = 0; i <= size / 2; i++)
            {
                Console.Write("{0}{1}{2}{1}{0}", new string('.', size / 2 - i), heart, new string('*', +i * 2));
                Console.WriteLine("{0}{1}{2}{1}{0}", new string('.', size / 2 - i), heart, new string('*', +i * 2));
            }
            for (byte i = 0; i <= size; i++)
            {
                Console.WriteLine("{0}{1}{2}{1}{0}", new string('.', i), heart, new string('*', size * 2 - i * 2));
            }
        }

        else
        {
            for (byte i = 0; i < size / 2; i++)
            {
                if (i == 0)
                {
                    Console.Write("{0}{1}{2}", new string('.', size / 2), heart, new string('.', size / 2 - 1));
                    Console.WriteLine("{0}{1}{2}", new string('.', size / 2), heart, new string('.', size / 2));
                }
                else
                {
                    Console.Write("{0}{1}{2}{1}{3}", new string('.', (size / 2) - i), heart, new string('*', i * 2 - 1), new string('.', (size / 2) - i - 1));
                    Console.WriteLine("{0}{1}{2}{1}{3}", new string('.', (size / 2) - i), heart, new string('*', i * 2 - 1), new string('.', (size / 2) - i));
                }
                //center
                if (size / 2 - 1 == i)
                {
                    Console.WriteLine("{0}{1}{0}{1}{0}", heart, new string('*', size - 1));
                }
            }
            //down
            for (byte i = 1; i < size; i++)
            {
                Console.WriteLine("{0}{1}{2}{1}{0}", new string('.', i), heart, new string('*', (size * 2) - (i * 2) - 1));
                if (size - i == 1)
                {
                    Console.WriteLine("{0}{1}{2}", new string('.', size), heart, new string('.', size));
                }
            }
        }
    }
}