using System;

public class Program

{

    public static void Main()

    {

        // Prompt User for Input

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

        string major = Console.ReadLine();

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

        string scorestr = Console.ReadLine();

        // Test if score is a whole number

        int score;

        bool IsValidNumber = Int32.TryParse(scorestr, out score);

        if (IsValidNumber == false)

        {

            Console.WriteLine("Please enter a valid number!");

        }

        // Test range is between 0 - 100

        if ( score < 0 || score > 100)

        {

            // Print Error

            Console.WriteLine("Please enter a number between 1-100");

        }

        // Begin if statement for score 

        if (score >= 90)

        {

            Console.WriteLine("You get an A");

            if(score > 90)

            {

                // Switch statement based on major

                switch (major)

                {

                    case "Information Systems":

                        Console.WriteLine("Congratulations! You are one of the best students in IS.");

                        break;

                    default:

                        Console.WriteLine("Congratulations! You are one of the best students");

                        break;

                }

            // Continue if statement for score

            } 

          }else if(score >= 80)

            {

            Console.WriteLine("You get a B");

            } else if(score >= 70)

            {

            Console.WriteLine("You get a C");

            } else if(score >= 60)

            {

            Console.WriteLine("You get a D");

            } else

            {

            Console.WriteLine("You get an F");

            }   

        }   

    }

​

​

// No they values must be a str or int

// No, the second case will not run

// No, an if statement should be used with a variable