In composition, the term purpose refers to a person’s reason for writing, such as to inform, entertain, explain, educate or persuade. In literature, purpose refers to the reasons/motives that make the author write a fictional work. It is the objective of a writer while writing a piece of work. In order to identify the purpose of a writer, we should ask ourselves why a story was written.
The purpose may be:
To inform: The author aims to enlighten the reader or provide him/her with information about a topic. He gives facts or information about something
To explain: The author may write to justify/clarify the reason why things are the way they are by providing details or facts.
To entertain: The author aims to provide with amusement/pleasure or enjoyment.