Declaration of a class
A class is defined in C++ using the keyword class followed by the name of the class. The body of the class is defined inside the curly brackets and terminated either by a semicolon or a list of declarations at the end.
The only difference between structure and class is the members of structure are by default public where as it is private in class.
• The class body contains the declaration of its members (Data member and Member functions).
• The class body has three access specifiers (visibility labels) viz., private , public and protected.