using System; 2 using UserNamespace; // namespace 3 4 5 namespace UserNamespace 6 + { 7 8 9 // User class definition public abstract class User { // instance variables private string user_id; // user id protected string user_password; // user password // parametrized constructor public User (string id, string pass) { user_id = id; user_password = pass; } // verifyLogin method to verify the login cresentials public bool verifyLogin(string id, string pass) { // return true, if matches // otherwise, return false return user_id.Equals(id)&&user_password. Equals(pass); } // abstract method public abstract void updatePassword(string newPassword); // Administrator clas definition public class Administrator: User { // instance variable private string admin_name; // name of admin // parametrized constructor public Administrator (string name, string id, string pass):base (id, pass) admin_name = name; 38 } 39 // updatePassword method to update the password of user public override void updatePassword (string newPassword) 40 41- { 42 user_password = newPassword; 43 } // updateAdminName method to update the name of the admin public void updateAdminName(string name) 45 46- { 47 admin_name = name; 48 } 49 50 51 // Testing class definition 52 public class Testing 53- 54 // main method 55 public static void Main() 56 { 57 // create an object of Administrator class 58 Administrator a = new Administrator ("Katty","kat123","katty123!"); // print the result 59 50 Console.WriteLine(a.verifyLogin("kat123","katty123!")); 51 52 10 11 12 13 14 15- 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36- 37

Description i What is timestamp? Note that we have only timestamps, which ALWAYS contain yyyy-mm-dd as a date, hh:mm:ss as a time, and +/-zzzz as a timezone. time 2017-10-14 00:11:20 +0000 date time zone 12345 + timeconverter.py 1 def convert_time(timestamp): #NOTE: COMPLETE THE CODE FROM HERE! 6 #DO NOT MODIFY THE CONTENT HERE: 7 def print_result(hour, minute): 8 9 print("The time is {}:{}".format(hour, minute)) 10 #DO NOT MODIFY THE CONTENT HERE: 11 timestamp_list = ['2017-10-14 00:11:20 +0000', 12 '2022-03-24 07:22:16 -0400' Topic: Timestamp Converter Write a program timeconverter.py that has two functions: 1) The function convert_time : for extracting the hour and minute from a timestamp and 2) The function print_result: for printing the results. Note that the two functions should be called under the loop. 1) The function convert_time should: 1. take the timestamp from the function call, 2. separate time from date and time zone, 3. split it into hour, minute and seconds, 4. extract…

What are the essential elements for creating a loop? Determine two circumstances that may necessitate two distinct loop types. Make careful you include explicit information for each situation that show why the various loop types are essential.

You have an equation r = 3*x^2 - 7*x+ 14. Write the MATLAB code to create a symbolic plot of x on the horizontal and r on the vertical axis from x = -10 to x = +10. (provide the code that can create the plot. Do not need to attach the plot below) %3D