When used by itself, ________ causes a file's contents to be deleted if the file already exists.
A) ios:app
B) ios::in
C) ios::out
D) All of the above
E) None of the above

Question

Quizplus · Accepted Answer

The ios::out flag specifies that output operations are allowed on the file. If the file already exists, then it will be truncated and its previous contents will be deleted. The other flags, ios:app and ios::in, do not specify this behavior.

When Used by Itself, ________ Causes a File's Contents to Be