using System;

// 1. [Code] Uncomment this following line of code

using System.Collections.Generic; 

​

// Customer class

public class Customer

{

    // 2. [Code] Use auto-implementation to add three properties

    //    (1) Name (public, string)

    //    (2) Education (public, string)

    //    (3) Email (public, string)

    public string Name { get; set; }

    public string Education { get; set; }

    public string Email { get; set; }

​

    // Default constructor

    public Customer()

    {}

​

    // 3. [Code] Add the second constructor with 3 parameters to update the 3 properties.

       public Customer(string name, string education, string email) 

    { 

        Name = name;

        Education = education;

        Email = email;

    }

    // 4. [Code] Function

    //    Function Name: EmailLength

    //    Input: no

    //    Output: int

    //    return length of user's email

    public int EmailLength()

    {

        return Email.Length;

    }

        public override string ToString()

    {

        return Name.PadRight(15) + Education.PadRight(15) + Email.PadRight(15);

    }

}

public class Program

{

    // 5. [Code] Add a CustomerList (static, because we will access it from the static Main method)

    static List<Customer> CustomerList = new List<Customer>();

    public static void Main()

    {

        // 6. [Code] Create 3 customer objects, and add them into a list

        //    Name: "John", Education: "Bachelor", Email: "john@gmail.com"

        //    Name: "David", Education: "Bachelor", Email: "david@iu.edu"

        //    Name: "Anderson", Education: "Master", Email: "anderson@iu.edu"

        Customer customer = new Customer("John", "Bachelor", "john@gmail.com");

        CustomerList.Add(customer);

        customer = new Customer("David", "Bachelor", "david@iu.edu");

        CustomerList.Add(customer);

        customer = new Customer("Anderson", "Master", "anderson@iu.edu");

        CustomerList.Add(customer);

        // Show the list

        Console.WriteLine("Show List");

        // 7. [Code] Use foreach to loop over the list and show name, education, and email information.

        //    Use PadRight(15) to format your output in three columns.

        foreach (Customer c in CustomerList) Console.WriteLine(c.ToString());

        Console.WriteLine("=============================================");

        // Show all list

        Console.WriteLine("Show Email Length for all the elements of the list");

        // 8. [Code] Use foreach to loop over the list and show the results of EmailLength() function

        foreach (Customer c in CustomerList) Console.WriteLine(c.EmailLength());

        Console.WriteLine("=============================================");

​

        // Show Only Bachelor

        Console.WriteLine("Show Only Bachelor Entries");

        //9. [Code] Use foreach to loop the list and show name, education, and email information.

        //   Use PadRight(15) to format your output in three columns.

        //   Show ONLY customer with a bachelor's degree.

        foreach (Customer c in CustomerList) 

        if (c.Education == "Bachelor") Console.WriteLine(c.ToString());

        // 10. [Code] Clear List

        CustomerList.Clear();

    }

}