using System;

public class Program

{

    public static void Main()

    {

        int a=0;

        int i=0;

        int d=0;

        int sc=0;

        Console.WriteLine("Enter a character :");

        String var = Console.ReadLine();

        for(int i = 0; i<var.Length; i++0);

    {

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

          a++;

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

         d++;

        else

         sc++;

    }

        Console.WriteLine("Number of Alphabets in the string is : {0}\n"+ a);

        Console.WriteLine("Number of Digits in the string is : {0}\n"+ d);

        Console.WriteLine("Number of Special characters in the string is :"+sc);

    }

}

​