Check input character is alphabet, digit or special character

All characters whether alphabet, digit or special character have ASCII value. Input character from the user will determine if it’s Alphabet, Number or Special character.
ASCII value ranges- 

• For capital alphabets 65 – 90
• For small alphabets 97 – 122
• For digits 48 – 57

Examples :

Input : 8
Output : Digit

Input : E
Output : Alphabet

C++

// CPP program to find type of input character
#include <iostream>
using namespace std;

void charCheck(char input_char)
{
    // CHECKING FOR ALPHABET
    if ((input_char >= 65 && input_char <= 90)
        || (input_char >= 97 && input_char <= 122))
        cout << " Alphabet ";

    // CHECKING FOR DIGITS
    else if (input_char >= 48 && input_char <= 57)
        cout << " Digit ";

    // OTHERWISE SPECIAL CHARACTER
    else
        cout << " Special Character ";
}

// Driver Code
int main()
{
    char input_char = '$';
    charCheck(input_char);
    return 0;
}

Java

// Java program to find type of input character
import java.io.*;

class GFG {

    static void charCheck(char input_char)
    {
        // CHECKING FOR ALPHABET
        if ((input_char >= 65 && input_char <= 90)
            || (input_char >= 97 && input_char <= 122))
            System.out.println(" Alphabet ");

        // CHECKING FOR DIGITS
        else if (input_char >= 48 && input_char <= 57)
            System.out.println(" Digit ");

        // OTHERWISE SPECIAL CHARACTER
        else
            System.out.println(" Special Character ");
    }

    // Driver Code
    public static void main(String[] args)
    {
        char input_char = '$';
        charCheck(input_char);
    }
}

// This code is contributed by vt_m.

Python3

# python program to find type of
# input character

def charCheck(input_char):

    # CHECKING FOR ALPHABET
    if ((int(ord(input_char)) >= 65 and
        int(ord(input_char)) <= 90) or
        (int(ord(input_char)) >= 97 and
        int(ord(input_char)) <= 122)):
        print( " Alphabet ")

    # CHECKING FOR DIGITS
    elif (int(ord(input_char)) >= 48 and
            int(ord(input_char)) <= 57):
        print(" Digit ")

    # OTHERWISE SPECIAL CHARACTER
    else:
        print(" Special Character ")

# Driver Code
input_char = '$'
charCheck(input_char)

# This code is contributed by Sam007.

C#

// C# program to find type of
// input character
using System;

class GFG {

    // Function to check type
    // of input character
    static void charCheck(char input_char)
    {
        // Checking for Alphabet
        if ((input_char >= 65 && input_char <= 90)
            || (input_char >= 97 && input_char <= 122))
            Console.WriteLine(" Alphabet ");

        // Checking for Digits
        else if (input_char >= 48 && input_char <= 57)
            Console.WriteLine(" Digit ");

        // Otherwise Special Character
        else
            Console.WriteLine("Special Character");
    }

    // Driver Code
    public static void Main()
    {
        char input_char = '$';
        charCheck(input_char);
    }
}

// This code is contributed by vt_m.

PHP

<?php
// PHP program to find type
// of input character

function charCheck($input_char)
{
    // CHECKING FOR ALPHABET
    if (($input_char >= 65 && $input_char <= 90)
        || ($input_char >= 97 && $input_char <= 122))
        echo " Alphabet ";

    // CHECKING FOR DIGITS
    else if ($input_char >= 48 &&
            $input_char <= 57)
    echo " Digit ";

    // OTHERWISE SPECIAL CHARACTER
    else
    echo " Special Character ";
}

// Driver Code
$input_char = '$';
charCheck($input_char);

// This code is contributed by Sam007
?>

Javascript

<script>
      // JavaScript program to find type of input character
      function charCheck(input)
      {
        var input_char = input.charCodeAt(0);

        // CHECKING FOR ALPHABET
        if (
          (input_char >= 65 && input_char <= 90) ||
          (input_char >= 97 && input_char <= 122)
        )
          document.write(" Alphabet ");

        // CHECKING FOR DIGITS
        else if (input_char >= 48 && input_char <= 57)
          document.write(" Digit ");

        // OTHERWISE SPECIAL CHARACTER
        else document.write(" Special Character ");
      }

      // Driver Code
      var input_char = "$";
      charCheck(input_char);

      // This code is contributed by rdtank.
    </script>

Output :

 Special Character 

Time complexity: O(1) as constant operations are done

Auxiliary space: O(1)