using System;

public class Program

{

    public static void Main()

    {

        string[] allgrades = new string[20]

        {

        "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "A+", "B+", "C+", "D+", "E+", "F+"

        }

        ;

        bool vFound = false;

        string vgrade;

        int vCount = 0;

        Console.WriteLine("Please enter your grade");

        vgrade = Console.ReadLine();

            do

            {

                if (allgrades[vCount] == vgrade)

                {

                    vFound = true;

                    Console.WriteLine("Grade was found");

                    vCount++;

                }

                else

                {

                    vCount++;

                }

            }                   

                while ((vFound == false) && (vCount < allgrades.Length));

                if (vFound == false)

                {

                    Console.WriteLine("The grade was not found");

                }

                Console.WriteLine("The loop ran " + vCount + " time(s).");

    }

}