using System;

class Book_Chapter2
{
    static void Main()
    {
        decimal Ivo = 77.123456m;
        decimal Bivo = 88.987654m;
        decimal Divo = Ivo + Bivo;
        decimal Kivo = Bivo - Ivo;
        Console.WriteLine(Divo);
        Console.WriteLine(Kivo);

        int Hex = 0x100;
        Console.WriteLine(Hex);

        int codesymbol = 0x48;
        char symbol = '\u0048';
        Console.WriteLine("The symbol with code " + codesymbol + " is " + symbol);

        bool isMale = true;
        Console.WriteLine("Vladimir Putin is a Man? " + isMale);

        string Hello = "Hello";
        string World = "World";
        object HelloWorld = Hello + " " + World;
        Console.WriteLine(HelloWorld);

        string HelloWorld2 = (string)HelloWorld;
        Console.WriteLine(HelloWorld2);

        Console.WriteLine("oooooooooo");
        Console.WriteLine("o       o");
        Console.WriteLine(" o     o");
        Console.WriteLine("  o   o");
        Console.WriteLine("    oo");

        Console.WriteLine("\u00A9 \u00A9 \u00A9" );
        Console.WriteLine("\u00A9                       \u00A9");


        Console.WriteLine("Enter your name: ");
        string PersonalName = Console.ReadLine();
        Console.WriteLine("Your name is: " + PersonalName);

        Console.WriteLine("Enter your gender (male or female): ");
        string GenderTry = Console.ReadLine();
        string Gender = " ";
            if (GenderTry == "male")
            {
                    Gender = GenderTry;
            }
            else if (GenderTry == "female")
            {
                   Gender = GenderTry;
            }
            else
            {
                Console.WriteLine("Error! Enter your gender again");
            }
         Console.WriteLine("Your gender is: " + Gender);

            Console.WriteLine("Enter your personal number: ");
            uint PersonalNumberTry = uint.Parse(Console.ReadLine());
            bool Validnumber = false;
            uint PersonalNumber = 0;
                if (PersonalNumberTry < 27560000)
                {
                     Validnumber = false;
                }
                else if (PersonalNumberTry > 27569999 )
                {
                     Validnumber = false;
                }
                else
                {
                    Validnumber = true;
                }
            if (Validnumber == true)
            {
                PersonalNumber = PersonalNumberTry;
            }
            else
            {
                Console.WriteLine("Wrong Number.Your number must me between 27560000 and 27569999");
            }
         Console.WriteLine("Your personalnumber is: " + PersonalNumber);

         int Int1 = 5;
         int Int2 = 10;
         int Int3 = Int1;
         Int1 = Int2;
         Int2 = Int3;
         Console.WriteLine(Int1);
         Console.WriteLine(Int2);
    }
}