Book Image

The Modern C++ Challenger

By : Brent Arnold, Kristian Secor
Book Image

The Modern C++ Challenger

By: Brent Arnold, Kristian Secor

Overview of this book

C++ is one of the most widely-used programming languages and has applications in a variety of fields, such as gaming, GUI programming, and operating systems, to name a few. Through the years, C++ has evolved into one of the top choices for software developers worldwide. You’ll begin your challenge with various math problems, including Armstrong numbers. As you progress through the course, the complexity of the challenges will increase. You’ll write a class template that represents a two-dimensional array container. You’ll also write a program to find files in a directory that match a regular expression. While tackling algorithms and data structures, you’ll create buffers and print histograms. Things will get tougher when you’ll write code to implement a general-purpose parallel algorithm using asynchronous functions. Whether it is creating an EAN-13 barcode generator or encrypting and decrypting files, this course will put your skills to test and in turn teach you several new features of C++.
Table of Contents (10 chapters)
Chapter 9
Cryptography
Content Locked
Section 4
Level 9 - Problem 3
Write a program that simulates the way users authenticate to a secured system. In order to log in, a user must be already registered with the system. The user enters a username and a password and the program checks if it matches any of its registered users; if it does, the user is granted access, otherwise, the operation fails. For security reasons, the system must not record the password but use an SHA hash instead.