Discussion on: Daily Challenge #219 - Compare Strings

public static int strCount(string text, char letter)
{
    var matches = Regex.Matches(text, $"{letter}");
    return matches.Count;
}

//Result
Console.WriteLine(strCount("Hello", 'o')); //1
Console.WriteLine(strCount("Hello", 'l')); //2
Console.WriteLine(strCount("", 'z')); //0
Console.WriteLine(strCount("oh goodness gracious", 'o')); //4
Console.WriteLine(strCount("howdy, pardner", 'd')); //2
Console.WriteLine(strCount("Incumbent President", 'e')); //3