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 {

                _yearlysalary = 36000;

                Console.WriteLine("warning");

            }

        }

    }

    // 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)

    {

        double Salary = 0;

        if(strType == "month")

           {

               Salary = YearlySalary/12;

           }

           else if (strType == "quarter")

           {

               Salary = YearlySalary/4;

           }

           else

           {

               Salary = YearlySalary;

           }

           return Salary;

    }

    // 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()

    {

        bool result = (YearlySalary > 50000);

        return result;

    }

    // 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 employee1 = new Employee();

        employee1.Name = "John";

        employee1.YearlySalary = 75000;

        Console.WriteLine("{0} earns ${1} each year", employee1.Name, employee1.YearlySalary);

​

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

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

        Console.WriteLine("The first three letters of employee 1 are " + employee1.GetFirstThreeLetters());

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

        Console.WriteLine("Is employee 1 a manager? Answer: " + employee1.IsEmployeeManager());

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

        Console.WriteLine("Monthly Salary is $" + employee1.CalculateSalary("month"));

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

        Console.WriteLine("Quarterly Salary is $" + employee1.CalculateSalary("quarter"));

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

        Console.WriteLine("Yearly Salary is $" + employee1.CalculateSalary("year"));

    }

}