using System;

​

public class Employee

{

    // 1. [Code] Create a private field (string _name) and a public property (Name)

​

    private string _name;

    public string Name

    {

        get {return _name;}

        set {_name = value;}

    }

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

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

​

    private double _yearlysalary;

    public double YearlySalary

    {

        get {return _yearlysalary;}

        set

        {

            if (value > 0)

            {

                _yearlysalary = value;  

            }

            else

            {

                const double DefaultSalary = 36000;

                Console.WriteLine("Negative value Identified. Changing to {0}", DefaultSalary);

                _yearlysalary = DefaultSalary;

            }

        }

    }

    // Constructor

    public Employee()

    {

    }

    // 3. [Code] Write a function: CalculateSalary with one string parameter

    // Input Parameter: string strType, will be one of the 3 string values ("month", "quarter", "year")

    // Output: return a double value 

    // 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)

    {

        int TimePeriod;

        if ( strType == "Month" )

        {

            TimePeriod = 12;    

        }

        else if ( strType == "Quarter")

        {

            TimePeriod = 4; 

        }

        else if (strType == "Year")

        {

            TimePeriod = 1; 

        }

        else

        {

            TimePeriod = 1; 

        }

        return YearlySalary / TimePeriod;

    }

    // 4. [Code] Write a function: IsEmployeeManager

    // Check whether the employee is a manager or not

    // Input: no

    // Output: return a boolean

    // if employee's salary is greater than 50000, return true; false, otherwise.

​

    public bool IsEmployeeManager()

    {

        if (YearlySalary > 50000)

        {

            return true;

        }

        else

        {

            return false;

        }

    }

    // 5. [Code] Write a function: GetFirstThreeLetters

    // Get first three letters from employee's name

    // Input: no

    // Output: return a string

    // Hint: use substring()

​

    public string GetFirstThreeLetters()

    {

        return Name.Substring(0,3); 

    }

}

public class Program

{

    public static void Main()

    {

        // 6. [Code] Create an Employee object

        // Nane (John); YearlySalary (75000)

        Employee John = new Employee();

        John.Name = "John";

        John.YearlySalary = 7500;

        // 7. [Code] Call object's functions

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

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

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

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

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

        string JohnFirstThreeLetter = John.GetFirstThreeLetters();

        Console.WriteLine("First three letters: {0} ", JohnFirstThreeLetter);

​

        bool IsJohnManager = John.IsEmployeeManager();

        Console.WriteLine("Is {0} a manager? {1}", John.Name, IsJohnManager);

        double MonthlySalary = John.CalculateSalary("Month");

        Console.WriteLine("Monthly Salary: {0}", MonthlySalary);

        double QuarterlySalary = John.CalculateSalary("Quarter");

        Console.WriteLine("Quarterly Salary: {0}", QuarterlySalary);

        double YearSalary = John.CalculateSalary("Year");

        Console.WriteLine("Yearly Salary: {0}", YearSalary);

    }

}