Define a new “User” class that contains a username (string), a password (string) and user id number (integer). For example, a User can have o “john”, “secret”, and 12345 It should have at least the following methods: o toString method must return all the user information as a string in the following format: NAME(user-name) PASSWORD(password) ID(user-id) such as NAME(john) PASSWORD(secret) ID(12345) o hasValidPassword method that checks and return true if the password is not the same as username or contains the user id. o isDuplicate that compares two User objects and return true if they both have the same user name and password and false otherwise. Important notes: o You can add as many other methods as you need. But this class should not provide the default constructor. Show how this class being used to create User objects and how these methods are being called and return proper values   All data members must be declared as “private” • No global variable can be declared and used • Methods within the class and the requested functions cannot have “cin” or “cout” but it should make use of parameters and return value instead. • “cin” and “cout” should be done in main() or any testing functions • Make sure that you clearly show how the C++ class, its methods and all the functions are being called at least twice and print out its return value and its results properly.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Define a new “User” class that contains a username (string), a password
(string) and user id number (integer). For example, a User can have
o “john”, “secret”, and 12345
It should have at least the following methods:
o toString method must return all the user information as a string in
the following format:
NAME(user-name) PASSWORD(password) ID(user-id) such as
NAME(john) PASSWORD(secret) ID(12345)
o hasValidPassword method that checks and return true if the
password is not the same as username or contains the user id.
o isDuplicate that compares two User objects and return true if they
both have the same user name and password and false otherwise.
Important notes:
o You can add as many other methods as you need. But this class
should not provide the default constructor.
Show how this class being used to create User objects and how these
methods are being called and return proper values

 

All data members must be declared as “private”
• No global variable can be declared and used
• Methods within the class and the requested functions cannot have “cin” or
“cout” but it should make use of parameters and return value instead.
• “cin” and “cout” should be done in main() or any testing functions
• Make sure that you clearly show how the C++ class, its methods and all
the functions are being called at least twice and print out its return value
and its results properly.

Expert Solution
Step 1

The objects of a class can be passed as arguments to member functions as well as nonmember functions either by value or by reference. When an object is passed by value, a copy of the actual object is created inside the function. This copy is destroyed when the function terminates. Moreover, any changes made to the copy of the object inside the function are not reflected in the actual object.

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