i cant understand why this c++ programm is useful

Answer 1

C++ is one of the oldest Object Oriented Programming(OOP) and most versatile languages in the world.
C++ is used to create computer programs! Anything from art applications, music players and even video games. You can represent almost any real world object in C++ and solve problems related to it. Be it a Traffic Signal controlling, Parking lot handling, Bank Accounts maintenance, almost anything.

Answer 2

Which one?