Question

Assume variable fiction is set up as in the preceding question.

void publish(Book& originalBook, bool newEdition)
{
if (newEdition)
{
originalBook.edition++;
newEdition = false;
}
}
…
bool reprint = true;
publish(fiction, reprint);
pick one: fiction's edition member: 2 or 1
pick one: reprint: true or false?

Answer 1

After calling the publish function, the edition of the fiction book will be incremented to 2, while the reprint flag remains true as it is passed by value to the function and not by reference.

Step-by-step explanation:

The question is related to a C++ programming assignment that deals with object references and function behavior. Within the given code snippet, the function publish is designed to increment the edition number of a Book object if the boolean flag newEdition is true. The parameter originalBook is passed by reference, which means any changes made to it within the function will be reflected outside the function as well.

When the publish function is called with the fiction book object and the boolean flag reprint set to true, the function increments the edition member of the fiction object. However, the change to newEdition within the function does not affect the variable reprint outside the function because the flag is passed by value, not by reference. Therefore, the fiction's edition member will be 2 if it was previously set to 1, while the value of the variable reprint will remain true.