Object-oriented programming:

Książka w języku angielskim. Object-Oriented Programming is a textbook that will enable any reader, regardless of their level, to understand the basic principles of structured and object-oriented programming. A beginner will have the opportunity to learn almost from scratch, and an advanced programmer will be able to consolidate, practice, and significantly expand his or her knowledge. In the book, the author has gathered a large amount of basic programming concepts, explaining the concept of data, its types and more complex structures, i.e. collections, along with the ways of referring to them through names and pointers. He discussed conditional statements, iteration, functions, objects and classes, as well as inheritance, polymorphism and access rules. An additional advantage of the content discussed is the questions and exercises with answers and the source codes of all programs with the possibility of downloading them directly to the computer.