Test: C++ Class Methods

The classes in C++ encapsulates(i.e. put together) all the data and functions related to them for manipulation.

There are three types of access specifiers. They are public, protected and private.

Struct and union take the same definition of class but differs in the access techniques.

A class declaration terminates with semicolon and starts with class keyword. only option (a) follows these rules therefore class A { int x; }; is correct.

By default all the data members and member functions of class are private.

Once the object is declared means, the constructor are also declared by default.

For structures, by default all the data members and member functions are public.

Fundamental/Atomic data type includes int, char, float, double and void. Derived data type includes arrays, pointers, references, function and constants. User defined derived data type includes class, structure, union and enumeration.

In Classes objects are self-referenced using this pointer inside the member functions. for example this->value to access the data member value of that object.

Mutable members are those which can be updated even if it a member of a constant object. You can change their value even from a constant member function of that class.