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

        {

            if (value < 0)

            {

                _yearlysalary = 36000; //set Default Value

            }

            else

            {

                _yearlysalary = value;

            }

        }

    }

    //Constructor

    public Employee()

    {

    }

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

    public double CalculateSalary(string strType)

    {

        double dSalary = 0;

        if (strType == "month")

        {

            dSalary = YearlySalary/12;

        }

        else if (strType == "quarter")

        {

            dSalary = YearlySalary/4;

        }

        else if (strType == "year")

        {

            dSalary = YearlySalary;

        }

        return dSalary;

    }

​

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

    public string GetFirstThreeLetter(string strPractice)

    {

        string strFirstThreeLetter = strPractice.Substring(0,3);

        return strFirstThreeLetter;

    }

}

public class Program

{

    public static void Main()

    {

        //5. [Code] Create an Employee object

        //NAME = John; YEARLYSALARY = 75000

        Employee Employee1 = new Employee();

        Employee1.Name = "John";

        Employee1.YearlySalary = 75000;

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

        Console.WriteLine(Employee1.GetFirstThreeLetter("John"));

        Console.WriteLine(Employee1.CalculateSalary("month"));

        Console.WriteLine(Employee1.CalculateSalary("quarter"));

        Console.WriteLine(Employee1.CalculateSalary("year"));

    }

}