C# Count Vowels

Question

I am learning to program C# and I am trying to count the vowels. I am getting the program to loop through the sentence, but instead of returning vowel count, it is just retu

Answer 1

We can use regular expression to match vowels in a sentence.

Regex.Matches() function will return an array with all occurrence of vowel. Then we can use the count property to find the count of vowels.

Regular expression to match vowels in a string: [aeiouAEIOU]+

Below is the working code snippet:

 public static void Main()
   {
       string pattern = @"[aeiouAEIOU]+";
       Regex rgx = new Regex(pattern);
       string sentence = "Who writes these notes?";
       Console.WriteLine(rgx.Matches(sentence).Count);
   }