/* Directions: Practice #7-2: Grade Selector

1) Add 4 double constants for the following values: 90, 80, 70, 60 representing grade ranges.

2) Create a double variable and assign it a grade.

3) Create a string variable the grade.

4) Create an if, elseif, elseif, elseif, else structure to determine the letter grade of the score.

    a) Greater than or equal to 90, assign an A to the grade variable.

    b) Greater than or equal to 80 and less than 90, assign a B to the grade variable.

    c) Greater than or equal to 70 and less than 80, assign a C to the grade variable.

    d) Greater than or equal to 60 and less than 70, assign a D to the grade variable.

    e) Assign an F to the grade variable.

5) Output appropriate message to the screen. For example: "A score of 90 is an A."  

6) Submit your dotnetfiddle link in Blackboard.

*/  

​

using System;

public class Program

{

    private const double dblGrade1 = 90;

    private const double dblGrade2 = 80;

    private const double dblGrade3 = 70;

    private const double dblGrade4 = 60;

    public static void Main()

    {

        double dblGrade = 74;

        string strGrade = Convert.ToString(dblGrade);

        if (dblGrade >= 90)

        {

            Console.WriteLine("A score of " + strGrade + " is an A.");

        }

        else if (dblGrade >= 80)

        {

            Console.WriteLine("A score of " + strGrade + " is a B.");

        }

        else if (dblGrade >= 70)

        {

            Console.WriteLine("A score of " + strGrade + " is a C.");

        }

        else if (dblGrade >= 60)

        {

            Console.WriteLine("A score of " + strGrade + " is a D.");

        }

        else

        {

            Console.WriteLine("A score of " + strGrade + " is an F.");

        }

    }

}