using System;

public 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 parameter.)

    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;

    }

    //Function: Show Title and Name

    public string ShowDetail()

    {

        string strReturn = "";

        strReturn = Title + ": " + Name;

        return strReturn;

    }

}

​

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

public class Staff : Employee{

    //1. Create one property for Staff

    //1.1 double DailyWage (Use Auto-Implementation)

    public double DailyWage{ get; set; }

    //2. [Code] Create base constructor without any parameter.

    public Staff( ) { }

    //3. [Code] Create the 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 d) {

        Name = n;

        Title = t;

        Age = a;

        DailyWage = d;

    }

    //4. [Code] Create a function

    //Function name: CalculateTotalWage

    //Input: int nDays

    //Output: double

    //Rule:

    //return total wage = # days * daily wage

    public double CalculateTotalWage(int nDays){

        return nDays*DailyWage;

    }

    //5. [Code] Create a function 

    //Function name: ShowDetail (override the parent function; method hiding)

    //Input: N/A 

    //Output: string

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

    public new string ShowDetail() {

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

    }

}

​

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

​

        //1.2 [Code] Call ShowDetail and use Console.WriteLine() to show the results

        Console.WriteLine(John.ShowDetail());

​

        //1.3 [Code] Call this staff's CalculateTotalWage

        //nDays = 250

        John.CalculateTotalWage(250);

        //What is the result?

        //Ans:30000 

    }

}