COS3711 Assignment 2 (COMPLETE ANSWERS) Semester 1 2025 – DUE 18 July 2025; 100% correct solutions and explanations.

COS3711 Assignment 2 (COMPLETE ANSWERS) Semester 1 2025 – DUE 18 July 2025; 100% correct solutions and explanations. 1. Introduction Please read this whole assignment tutorial letter before starting to ensure that you know what is expected of you and you do not get surprised by some requirement later in the development process. Use CMake to set up the projects and use QMainWindow instances for the user interfaces so that you can implement the functionality provided by a QMainWindow (such as menus, a toolbar, and a status bar) to meet the requirements of the scenario given below. Please note that you must not use Qt Designer, and you are expected to manually set up GUIs to ensure that you properly handle memory using Qt’s parent-child functionality. Marks will also be awarded for following good programming practice. • Follow standard naming conventions: class names start with a capital letter, variable and function names start with a lowercase letter, using camelCase for names made up of multiple words. • Ensure consistent code layout and use of blank lines. • Use forward class declarations in header files. • Use initialiser lists in constructors. • Have proper GUI management: setting cursor focus, sequential tabbing, clearing input widgets (like text input fields being cleared and spin boxes being returned to some default value), and enabling and disabling buttons/menu items as appropriate. • Provide appropriate user feedback. • Your code should build and run without any warnings. Consider the following scenario and then design a solution to meet the requirements listed. 2. Scenario Implement an application that tracks items bought from a store. Screenshots of possible interfaces have been provided as guidance below. Store application The store keeps a list of