using System;

​

public class Program

{

    public static void Main()

    {

        string sentence;

        int i = 0, alphabets = 0, digits = 0, specialChars = 0;

        Console.WriteLine("please enter something");

        sentence = Console.ReadLine();

        for (i = 0; i <= sentence.Length - 1; i++)

        {

            if ((sentence[i] >= 'a' && sentence[i] <= 'z' ) || (sentence[i] >='A' && sentence[i] <='Z'))

            {

​

                alphabets++;

            }

            else if (sentence[i] >= '0' && sentence[i] <= '9')

            {

                digits++;

            }

                else

                    specialChars++;

        }

​

        Console.WriteLine("The num of alphabets is " + alphabets);

        Console.WriteLine("The num of digits is "  + digits);

        Console.WriteLine("The num of specialchars is " + specialChars);

    }

}