Thank you so much for your help. Now it is giving me new errors for something else and I dont understand. Does anyone know?

public static void Main()
{
stringinput,firstname,lastname;
double idium;
int password, choice;
string name;

Console.WriteLine("Enter your firstname:");
Console.WriteLine("Enter your ID Number:");
input = Console.ReadLine();
FirstName = Convert.ToString(input);


Console.WriteLine("Enter your lastname:");
input = Console.ReadLine();
LastName = Convert.ToString(input);

}

public static void checkout()
{

Console.Write("You are ready to check out.");

double\[\] payRate;
payRate = new double\[4\];
payRate\[0\] = 3.00;
payRate\[1\] = 4.15;
payRate\[2\] = 6.42;
payRate\[3\] = 7.95;

for(int x = 0; x < 4; ++x)
Console.WriteLine("Pay rate {0} is {1}", x, payRate\[x\].ToString("C"));

}

}

I am working on this particular part of code in c# and I keep receiving error messages and I dont know what I am doing wrong. Can anyone help me out?

public static void personalDetails()
{
string [,] books =
{"The Time Machine, Science Fiction, By H.G.Wells",3};
{"Ender's Game, Science Fiction, By Orson Scott Card",1};
{"Brave New World, Science Fiction, By Aldous Huxley",3};
{"Frankenstein, Horror, By Stephen King",1};
{"Misery, Horror, By Stephen King",2};
{"The Dark Half, Horror, By Stephen King",2};
{"Firestarter, Horror, By Stephen King",3};
{"Torment, Mystery, By Lauren Kate",3};
{"Before I fall, Mystery, By Lauren Oliver",3};
{"Entwined, Mystery, By Heather Dixon",2};
{"The Thirteenth Chime, Mystery, By Heather Dixon",1};
{"My Sister's Keeper, Mystery, By Jodi Picoult",3};
{"Harry Potter and the Deathly Hallows(Harry Potter,#7), Mystery,By J.K.Rowling",2};
{"The Da Vinci Code, Mystery, By Dan Brown",2};

int book
const MAX\_BOOK = 5;

if(book >=5)
    Console.WriteLine("You are at your limit!")

}