A building security system has door locks that are opened by typing a four-digit access code into a keypad. The access code is validated by querying an Access object with the following interface: class Access public: void activate (unsigned code); void deactivate (unsigned code): bool isactive (unsigned code) const: Each employee is given a different access code, which is activated using the activate () function. When an employee leaves the company, his or her access code is deactivated using the deactivate () function. Implement the Access class specified above. Write a test program that does the following • Create an Access object. • Activate the codes 1234, 9999, and 9876. • Prompt the user for an access code. Read the code from the console. • Tell the user whether the door opened successfully. • Repeat the last two steps until the door opens. • Deactivate code that worked. Also, deactivate code 9999 and activate code 1111. • Repeat steps 3 and 4 until the door opens. Note: Use SET container in your solution. Feel free to add required members in the class.

A building security system has door locks that are opened by typing a four-digit access code into a keypad. The access code is validated by querying an Access object with the following interface: class Access public: void activate (unsigned code); void deactivate (unsigned code): bool isactive (unsigned code) const: Each employee is given a different access code, which is activated using the activate () function. When an employee leaves the company, his or her access code is deactivated using the deactivate () function. Implement the Access class specified above. Write a test program that does the following • Create an Access object. • Activate the codes 1234, 9999, and 9876. • Prompt the user for an access code. Read the code from the console. • Tell the user whether the door opened successfully. • Repeat the last two steps until the door opens. • Deactivate code that worked. Also, deactivate code 9999 and activate code 1111. • Repeat steps 3 and 4 until the door opens. Note: Use SET container in your solution. Feel free to add required members in the class.

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

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Can someone answer the task below?
solve using c++
How do you build a C++ program that asks the user to enter three integer values as input and stores the values into three different variables? Additionally, for each variable, create an integer pointer to dynamic memory and display the contents of the variables and pointers. Furthermore, be sure to use the new operator and delete operators to manage memory. Please and thank you
C++ program Choose the correct answer
c++
Please I need help to get this homework done, I am not sure how to build the program correctly.
:write a program c++ A General Service company hired you to write a program to compute the total charge for the services rendered to their client. The program will ask first if there is a material needed or not. If there is, the program will ask if what material is needed. The program will then ask for the cost of that materials entered and the number of hours of the services rendered. Finally, the program will compute for the labour cost and the total charge. Assumption: Rate Computation: Labour : Total Charge Materials: 1.) Electricals 2.) Electronics 3.) Construction 4.) Sanitary $45.00 per hour Rate * hours work : Labour + Cost of Materials
C++ Programming ONLY 18. Count the Trail by CodeChum Admin Help, I'm lost! I usually find my way around here but I somehow lost my glasses along the way. I can easily get back home as long as I can tell how many zeroes I left in my trail. Would you mind telling me how many zeroes are trailing? Note: Trailing zeroes are the zeroes found at the right side of a number. Input 1. The number to be evaluated Constraints This can only be a positive integer. Output The first line will contain a message prompt to input the number to be evaluated. The second line will contain the number of trailing zeroes. Enter·the·number:·24100 Trailing·zeroes·=·2
Only use given directions, no extra code needed. Thank you!
C Programming Problem: In your annual examination you are given two numbers X and Y. Below are some tasks that you can perform on these given numbers: Re-write X in form of binary number. Mix the binary digits of X in any pattern, let's call the obtained number as T. Replace X by T+1 Now develop a C code to find the number of minimum operations required to achieve Y starting from X. If there no such operations then display “-1" as output. Sample Input: 1 13 Output: 1
c++