Create a simple text editor that maintains its text in a text file. The user should be able to create a new document or retrieve an existing one by providing a specific name. If the document exists,...

Create a simple text editor that maintains its text in a text file. The user should be able to create a new document or retrieve an existing one by providing a specific name. If the document exists, display each of its lines with the appropriate line numbers. If the document does not exist, create a blank one. Enable the user to add, replace, or delete lines anywhere in the document by specifying a line number and desired text. Allow the user the option of ending the program with or without saving the document.