using System;

public class Program

{

    public static void Main()

    {

        // Answer the following questions:

​

// 1. Can you use the Switch statement for a Double type? Why (why not)?

        // You cannot. Float and double are not allowed. They must be an ordinal type.

// 2. Can you have duplicate cases in a Switch?

        // You can, but be wary that the second case will never be executed.

// 3. Can you use a variable in the case? i.e., Instead of “case 0:” have “case x:”

        // Yes

// 4. Write the following program in dotnetfiddle.net, save it as Lab7 there. Share that link here.

        // *** I put it down below. Is that ok? Here is a link as well. (https://dotnetfiddle.net/Mut63F)

// 1.Get a string from the user (this string represents a student’s major.)

​

Console.WriteLine("What is your major?");

string sMajor = Console.ReadLine();

// 2.Get a number from a user (this number represents a student’s score.)

Console.WriteLine("What is your score? (1-100)");

string sScore = Console.ReadLine();

double dScore = double.Parse(sScore);   

​

// 3.Validate whether the score is a whole number.

    // If not, show an error message.

if(dScore % 1 == 0)

 { 

 }

 else

 {

     Console.WriteLine("ERROR: Please enter a whole number.");

 }

​

// 4.Validate whether the score’s range is between 0 and 100.

    // If not, show an error message.

if(dScore >=0 && dScore <=100)

 { 

 }

 else

 {

     Console.WriteLine("ERROR: Please enter a number between 0 and 100.");

 }

// 5.Show the following information based on the score.

​

// Score: >= 90, show "You get A ".

// Score: 80 ~ 89, show "You get B ".

// Score: 70 ~ 79, show "You get C".

// Score: 60 ~ 69, show "You get D".

// Score: < 60, show  "You get F".

// For an individual's score greater than 90, check his/her major

if(dScore >= 90)

{

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

}

        else if(dScore < 90 && dScore >=80)

    {

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

    }

        else if(dScore < 80 && dScore >=70)

    {

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

    }

        else if(dScore < 70 && dScore >=60)

    {

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

    }

        else

        {

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

        }

​

// Show "Congratulations! You are one of the best students in IS." if the major is "Information Systems"

​

// Show "Congratulations! You are one of the best students.” for other majors.

if(dScore > 90 & sMajor == "Information Systems")

{

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

}

        else

        {

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

        }

    }

}