using System;

​

public class Program

{

    public static void Main()

    {

        string grade;

        Console.WriteLine("Enter your letter grade");

        grade = Convert.ToString(Console.ReadLine());

        if (grade =="A")

        {

            Console.WriteLine("Numerical Equivalent: 99-100%");

            Console.WriteLine("Description: Excellent");

        }

        else if (grade =="A-")

        {

            Console.WriteLine("Numerical Equivalent: 96-98%");

            Console.WriteLine("Description: Very Good");

        }

        else if (grade =="B+")

        {

            Console.WriteLine("Numerical Equivalent: 93-95%");

            Console.WriteLine("Description: Very Good");

        }

        else if (grade =="B")

        {

            Console.WriteLine("Numerical Equivalent: 90-92%");

            Console.WriteLine("Description: Good");

        }

        else if (grade == "B-")

        {

            Console.WriteLine("Numerical Equivalent: 87-89%");

            Console.WriteLine("Description: Good");

        }

        else if (grade =="C+")

        {

            Console.WriteLine("Numerical Equivalent: 84-86%"); 

            Console.WriteLine("Description: Satisfactory"); 

        }

        else if (grade == "C")

        {

            Console.WriteLine("Numerical Equivalent: 81-83%");

            Console.WriteLine("Description: Satisfactory"); 

        }

​

        else if (grade == "C-")

        {

            Console.WriteLine("Numerical Equivalent: 78-80%");

            Console.WriteLine("Description: Pass");

        }

      else if (grade =="D")

        {

            Console.WriteLine("Numerical Equivalent: 75.00-77.74%");

            Console.WriteLine("Description: Pass");

        }

        else if (grade == "F")

        {

            Console.WriteLine("Numerical Equivalent: Below 75%");

            Console.WriteLine("Description: Fail");

        }

        else if (grade == "INC") 

        {

            Console.WriteLine("Numerical Equivalent: NA");

            Console.WriteLine("Description: Incomplete"); 

        }

    }

}