The difficulty of designing, implementing, and maintaining a software project arises with respect to the complexity of the project. A simple calculator could be written using the procedural approach (that is, the procedural programming paradigm), while a bank account management system would be too complex to implement using the same approach.
C++ supports Object-Oriented programming (OOP), a paradigm that is built upon dissecting entities into objects that exist in a web of close intercommunication. Imagine a simple scenario in the real world when you take the remote to change the TV channel. At least three different objects take part in this action: the remote, the TV, and, most importantly, you. To express the real-world objects and their relationship using a programming language, we aren't forced to use classes, class inheritance...