Classes extend the built-in capabilities of C++ able you in representing and solving complex, real-world problems. A class is an organization of data and functions which operate on them. Data structures are called data members and the functions are called member functions, the combination of data members and member functions constitute a data
object or simply an object.
Class is a group of data member and member functions. Another word class is a collection of objects of similar type.
To create a class, use the class keyword followed by a name for the object. Like any other declared variable, the class declaration ends with a semi-colon. The name of a class follows the rules we have applied for variable and function names.