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)

    private double _yearlysalary;

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

    public double YearlySalary

    {

        get

        {

            return _yearlysalary;

        }

        set

        {

            if(value <0)

            {

                _yearlysalary = 36000;

            }

            else

                _yearlysalary = value;

        }

    }

​

    //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;

        }

    } 

​

    //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()

    {

        return Name.Substring(0,3);

    }

}

public class Program

{

    public static void Main()

    {

        //5. [Code] Create an Employee object

        //NAME = John; YEARLYSALARY = 75000

        Employee EmpJohn = new Employee();

        EmpJohn.Name = "John";

        EmpJohn.YearlySalary = 75000;

​

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

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

        Console.WriteLine("Frst three letters of name: " + EmpJohn.GetFirstThreeLetter());

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

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

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

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

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

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

    }

}