Check if a character is a vowel or consonant?

Question

Is there a code to check if a character is a vowel or consonant? Some thing like char = IsVowel? Or need to hard code?

case ‘a’:
case ‘e’:
case ‘i’:
case ‘o’         


        

Answer 1

This works just fine.

public static void Main(string[] args)
    {
        int vowelsInString = 0;
        int consonants = 0;
        int lengthOfString;
        char[] vowels = new char[5] { 'a', 'e', 'i', 'o', 'u' };

        string ourString;
        Console.WriteLine("Enter a sentence or a word");
        ourString = Console.ReadLine();
        ourString = ourString.ToLower();

        foreach (char character in ourString)
        {
            for (int i = 0; i < vowels.Length; i++)
            {
                if (vowels[i] == character) 
                {
                    vowelsInString++;
                }
            }
        }
        lengthOfString = ourString.Count(c => !char.IsWhiteSpace(c)); //gets the length of the string without any whitespaces
        consonants = lengthOfString - vowelsInString; //Well, you get the idea.
        Console.WriteLine();
        Console.WriteLine("Vowels in our string: " + vowelsInString);
        Console.WriteLine("Consonants in our string " + consonants);
        Console.ReadKey();
    }
}

Answer 2

Here's a function that works:

public static class CharacterExtentions
{
    public static bool IsVowel(this char c)
    {
        long x = (long)(char.ToUpper(c)) - 64;
        if (x*x*x*x*x - 51*x*x*x*x + 914*x*x*x - 6894*x*x + 20205*x - 14175 == 0) return true;
        else return false;
    }
}

Use it like:

char c = 'a';
if (c.IsVowel()) { // it's a Vowel!!! }

(Yes, it really works, but obviously, this is a joke answer. Don't downvote me. or whatever.)

Answer 3

Try this out:

char[] inputChars = Console.ReadLine().ToCharArray();
int vowels = 0;
int consonants = 0;
foreach (char c in inputChars)
{
   if ("aeiou".Contains(c) || "AEIOU".Contains(c))
   {
       vowels++;
   }
   else
   {
       consonants++;
   }
}
Console.WriteLine("Vowel count: {0} - Consonant count: {1}", vowels, consonants);
Console.ReadKey();

Answer 4

Console.WriteLine("Please input a word or phrase:");
string userInput = Console.ReadLine().ToLower();

for (int i = 0; i < userInput.Length; i++)
        {
            //c stores the index of userinput and converts it to string so it is readable and the program wont bomb out.[i]means position of the character.
            string c = userInput[i].ToString();
            if ("aeiou".Contains(c))
            {
                vowelcount++;
            }
        }
        Console.WriteLine(vowelcount);

Answer 5

Why not create an array of the vowels/consonants and check if the value is in the array?

Answer 6

You can use the following extension method:

using System;
using System.Linq;

public static class CharExtentions
{
    public static bool IsVowel(this char character)
    {
        return new[] {'a', 'e', 'i', 'o', 'u'}.Contains(char.ToLower(character));
    }
}

Use it like:

'c'.IsVowel(); // Returns false
'a'.IsVowel(); // Returns true