How to make an if/else console, that can recognize wether i write a, b or c?

[frederik]

class Program
{
static void Main(string[] args)
{
String temp;
Double alder;


Console.WriteLine("how old are you?");
temp = Console.ReadLine();
alder = Convert.ToDouble(temp);

if (alder <= 30)
Console.WriteLine("youre too young");

else if (alder <= 50)
Console.WriteLine("you may enter");

else
Console.WriteLine ("youre too old");
Console.ReadKey();





}
}

[GaryTexmo]

Can you please clarify your question? The code you posted works just fine.