static void GetName(string number)
switch (number[number.Length - 1])
case '1': Console.WriteLine("One"); break;
case '2': Console.WriteLine("Two"); break;
case '3': Console.WriteLine("Three"); break;
case '4': Console.WriteLine("Four"); break;
case '5': Console.WriteLine("Five"); break;
case '6': Console.WriteLine("Six"); break;
case '7': Console.WriteLine("Seven"); break;
case '8': Console.WriteLine("Eight"); break;
case '9': Console.WriteLine("Nine"); break;
case '0': Console.WriteLine("Zero"); break;
default: Console.WriteLine("Wrong input."); break;
static void Main(string[] args)
Console.Write("Enter a number: ");
string number = Console.ReadLine();