For this reason, structured programming is much more difficult to reuse than object-oriented programming. Code is easily reusable in object-oriented programming because new data and functions can be easily added to the program without affecting other parts of the program. Finally, structured programming emphasizes procedure, while object-oriented programming focuses on data. This means that structured programming consists of a set of procedures, which includes separate code for each procedure. This represents a small part of the big overall problem. Each procedure is called separately from the main procedure. Object-oriented programming, on the other hand, focuses on data objects and their attributes and operations