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 base constructor (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 () {}

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

    public Staff (string n, string t, int a, double dw)

    {

        Name = n;

        Title = t;

        Age = a;

        DailyWage = dw;

    }

    // 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 dTotalWage = nDays * DailyWage;

        if (bExtraBonus == true)

        {

            if (Age > 60)

            {

                return dTotalWage += 1000;

            }

            else

            {

                return dTotalWage += 500;

            }

        }

        else

        {

            return dTotalWage;

        }

    }

}

​

    // [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 () {}

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

    public Manager (string n, string t, int a, double yw) 

    {

        Name = n;

        Title = t;

        Age = a;

        YearlyWage = yw;

    }

    // 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()

    {

        string strReturn = "";

        strReturn = Title + "(manager): " + Name;

        return strReturn;

    }

    // 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 dTotalWage = YearlyWage;

        if (bExtraBonus == true)

        {

            return dTotalWage += 3000;

        }

        else

        {

            return dTotalWage;

        }

    }

}

​

​

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 emp = new Staff();

        emp.Name = "John";

        emp.Title = "Specialist";

        emp.Age = 28;

        emp.DailyWage = 120;

​

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

        // Ans: Y

        // Why: just have to use show detail function which is in the employee class

​

​

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

        // Ans: Y

        // Why: show detail function stored in parent class

​

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

        Console.WriteLine(emp.ShowDetail());

​

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

        // nDays: 250; bExtraBonus: true

        // What is the result?

        // Ans: 30500

        Console.WriteLine(emp.CalculateTotalWage(250,true));

​

        // 2.1 [Code] Create a manager here

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

        Manager man = new Manager();

        man.Name = "Mary";

        man.Title = "Manager";

        man.Age = 42;

        man.YearlyWage = 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: manager class has a different function under the same name as the one used in the staff class

        Console.WriteLine(man.ShowDetail());

​

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

        // bExtraBonus: true

        // What is the result? 81500

        Console.WriteLine(man.CalculateTotalWage(true));

    }

}