Question

Read Chapter 6 - Data Types Answer the following questions:

Answer 1

Answer 3) A subtype is nothin but a specialized version of a type. A derived class is a subtype (subclass) of a base class type.In C++.Another type of subtype means that we can use the subtype in all situations where the parent type could be used.
Subtypes of a given type will be compatible with each other. whereas a derived type is completely new and is incompitable with it's parent.

Answer 4) The -> operator in C or C++ is used to access elements in Structures and Unions.It gives the value held by variable to structure or union variable pointer

It's syntax is:

(pointer)->(variable)

It is as if the arrow is pointing towards the variable present in the structure.

Answer 5) In Java, an enumeration can be compared to a named instance of a class.where we can customize the members available on the enumeration. Whereas In case of C++, an enumeration is nothing but a set of integral constants.
C++ will automatically convert enum values to their equivalent integral values, whereas the conversion is not automatic in case of java.