I have a signal that blocks SIGINT and basically says "Sorry, you can't quit.\n"

The issue is this can occur during a scanf.

When this occurs during a scanf, scanf takes in the printf as input.

How can I do a printf that will cause scanf to basically hit the enter key automatically. I don't care that I am getting bad input. I just want to programatically finish that scanf with a printf or something else.

Process:

scanf("get stuff") -> User is able to enter stuff in.

-> SIGINT occurs and goes to my handler.

-> Handler says "Blah blah blah" to stdout.

-> Scanf has taken this blah blah blah and is waiting for more input.

How do I make it so that when I return scanf is finished (don't care what it has gathered I just want it to continue without user help).