using System;

class Employee

{

    // Create three properties for employee; Use Auto-Implementation

    public string Name { set; get; }

    public string Title { set; get; }

    public int Age { set; get; }

​

    // Create default constructor for Employee (without any parameters)

    public Employee()

    {

    }

​

    // Create constructor with three parameters and set up the value for Name, Title, and Age

    public Employee(string n, string t, int a)

    {

        Name = n;

        Title = t;

        Age = a;

    }

​

    // Create a function

    // Function name: ShowDetail

    // Input: N/A 

    // Output: string

    // Rule: return Title + ": " + Name

    public string ShowDetail()

    {

        string strReturn = "";

        strReturn = Title + ": " + Name;

        return strReturn;

    }

}

​

    // [Code] Create a Class "Staff" that inherits from the Class Employee

class Staff : Employee

{

    // 1. Create one property for Staff: double DailyWage

    public double DailyWage { get; set; }

    // 2. Create base constructor without any parameters.

    public Staff() : base()

    {

    }

    // 3. Create second constructor with four parameters and set up the value for Name, Title, Age, and DailyWage

    public Staff(string name, string title, int age, double dailyWage) : base(name, title, age)

    {

        DailyWage = dailyWage;

    }

    // 4. [Code] Create a function

    //    Function name: CalculateTotalWage

    //    Input: int nDays, bool bExtraBonus

    //    Output: double

    //    Rule:

    //    (a) return total wage = # days * daily wage

    //    (b) if bExtraBonus is true

    //    (b.1) Add 1000 to total wage for age > 60

    //    (b.2) Add 500 to total wage for other cases

    public double CalculateTotalWage(int nDays, bool bExtraBonus)

    {

        double totalWage = nDays * DailyWage;

        if (bExtraBonus)

        {

            if (Age > 60)

            {

            totalWage += 1000;

            }

            else

            {

                totalWage += 500;

            }

        }

        return totalWage;

    }

}       

    // [Code] Create a Class "Manager" that inherits from the Class Employee

class Manager : Employee

{

    // 1. Create one property for Manager: double YearlyWage

    public double YearlyWage { get; set; }

    // 2. Create base constructor without any parameters

    public Manager() : base()

    {

    }

    // 3. Create second constructor with four parameters and set up the value for Name, Title, Age, and YearlyWage

    public Manager(string name, string title, int age, double yearlyWage) : base(name, title, age)

    {

        YearlyWage = yearlyWage;

    }

    public new string ToString()

    {

        return Title + "(manager): " + Name;

    }

    // 4. Create a function 

    //    Function name: ShowDetail (hide the parent function)

    //    Input: N/A 

    //    Output: string

    //    Rule: return Title + "(manager): " + Name

    public new string ShowDetail()

    {

        return Title + "(manager): " + Name;

    }

    // 5.Create a function

    //    Function name: CalculateTotalWage

    //    Input: bool bExtraBonus

    //    Output: double

    //    Rule:

    //    (a) return total wage = YearlyWage

    //    (b) if bExtraBonus is true, add 3000 

    public double CalculateTotalWage(bool bExtraBonus)

    {

        double totalWage = YearlyWage;

        if (bExtraBonus)

        {

            totalWage += 3000;

        }

        return totalWage;

    }

}

public class Program

{

    public static void Main()

    {

        // 1.1 [Code] Create a staff by using the second contructor

        // Name: John; Title: Specialist; Age: 28; DailyWage: 120

        Staff staff = new Staff("John", "Specialist", 28, 120);

​

        // 1.2 [Question] Can you show the newly created staff's name? Y/ N

        // Ans: 

        // Why: "Name" is public

​

​

        // 1.3 [Question] Can you show the newly created staff's title? Y/ N

        // Ans: 

        // Why: "Title" is public

​

        // 1.4 [Code] Call ShowDetail and use Console.WriteLine() to show the results

        Console.WriteLine(staff.ShowDetail());

​

        // 1.5 [Code] Call this staff's CalculateTotalWage

        // nDays: 250; bExtraBonus: true

        double totalWageStaff  = staff.CalculateTotalWage(250, true);

        Console.WriteLine("Total Wage for Staff: " + totalWageStaff);

        // 2.1 [Code] Create a manager here

        // Name: Mary; Title: Manager; Age: 42; YearlySalary: 78500

        Manager manager = new Manager("Mary", "Manager", 42, 78500);

​

        // 2.2 [Code] Call ShowDetail and use Console.WriteLine() to show the results

        // [Question] Why is the result different from staff's result?

        // Why: "ShowDetail" is a part of the Employee class which has a different format

        Console.WriteLine(manager);

​

        // 2.3 [Code] Call this manager's CalculateTotalWage

        // bExtraBonus: true

        double totalWageManager = manager.CalculateTotalWage(true);

        Console.WriteLine("Total Wage for Manager: " + totalWageManager);

    }

}