using System;

​

public class Employee

{

    //1. [Code] (string) Create a public string field (NAME)

​

    public string NAME;

    //2. [Code] (double) Create a private field (_yearlysalary) and a public properties (YEARLYSALARY)

    //Rule: yearly salary should not be negative. If the value is negative, set default value as 36000

​

    private double _yearlySalary;

    public double YEARLYSALARY

    {

        get { return _yearlySalary; }

        set { _yearlySalary = (value >= 0) ? value : 36000; }

    }

    //Constructor

    public Employee()

    {

    }

    //3. [Code] Create a function:CalculateSalary()

    //Get (monthly, quarterly, or yearly) salary

    //Input: string strType

    //Output: return a double type 

    //if strType equals to "month", return monthly salary (monthly salary = yearly salary / 12)

    //if strType equals to "quarter", return quarterly salary (quarterly salary = yearly salary / 4)

    //if strType equals to "year", return yearly salary

​

    public double CalculateSalary(string strType)

    {

        switch (strType.ToLower())

        {

            case "month":

                return _yearlySalary / 12;

            case "quarter":

                return _yearlySalary / 4;

            case "year":

                return _yearlySalary;

            default:

                return 0; // Invalid input, return 0

        }

    }

    //4. [Code] Create a function: GetFirstThreeLetter()

    //Get first three letter from employee's name

    //Input: no

    //Output: return a string

    //Hint: use substring() & NAME variable

    public string GetFirstThreeLetter()

    {

        if (NAME.Length >= 3)

            return NAME.Substring(0, 3);

        else

            return NAME; // If name is shorter than 3 letters, return the whole name

    }

}

public class Program

{

    public static void Main()

    {

        //5. [Code] Create an Employee object

        //NAME = John; YEARLYSALARY = 75000

​

        Employee emp = new Employee();

        emp.NAME = "John";

        emp.YEARLYSALARY = 75000;

        //6. [Code] Call object's function

        //Call GetFirstThreeLetter() function and print out the information.

         Console.WriteLine("First three letters of the name: " + emp.GetFirstThreeLetter());    

        //Call CalculateSalary("month") function and print out the information.

         Console.WriteLine("Monthly Salary: $" + emp.CalculateSalary("month")); 

        //Call CalculateSalary("quarter") function and print out the information.

        Console.WriteLine("Quarterly Salary: $" + emp.CalculateSalary("quarter"));  

        //Call CalculateSalary("year") function and print out the information.

        Console.WriteLine("Yearly Salary: $" + emp.CalculateSalary("year"));    

    }

}