public static void Main()
string[] alphabets = {"A", "B", "C", "D", "E", "F", "G"
, "H","I","J","K","L","M","N","O","P","Q","R","S","T","U"
Console.WriteLine(Array.IndexOf(alphabets, $"{input}"));
for (int numberOfLoops = 0; numberOfLoops < 26; numberOfLoops++)
if (input == alphabets[numberOfLoops])
Console.WriteLine(numberOfLoops + 1);