public static void Main()
string str = Console.ReadLine();
if ((int)str[0] >= 97 && (int)str[0] <= 122)
Console.WriteLine("LowerCase Letter");
else if ((int)str[0] >= 65 && (int)str[0] <= 90)
Console.WriteLine("UpperCase Letter");
else if ((int)str[0] >= 48 && (int)str[0] <= 57)
Console.WriteLine("Digit");
Console.WriteLine("Special Character");