public static void Main(string[] args)
letters = numbers = special_Characters = i = 0;
Console.WriteLine("Count the Characters");
Console.WriteLine("Enter a string: ");
input = Console.ReadLine();
for (i = 0; i < length; i++)
isNumeric = input[i] >= '0' && input[i] <= '9';
isAlphabetCapsOff = input[i] >= 'a' && input[i] <= 'z';
isAlphabetCapsOn = input[i] >= 'A' && input[i] <= 'Z';
if (isAlphabetCapsOn == true || isAlphabetCapsOff == true)
else if (isNumeric == true)
Console.WriteLine("Letters count: {0}", letters);
Console.WriteLine("Number count: {0}", numbers);
Console.WriteLine("Special character count: {0}", special_Characters);
Console.WriteLine("Total number of characters: {0}", letters + numbers + special_Characters);
Console.WriteLine("No input! Please input a string");