How to avoid page break when using \include?

Question

I am writing a book, the format goes like this: Theory -> Answer key -> Hints -> Solutions. I have separate tex files for theory, answer key, hints and solutions. The problem is that when I combine all of them by using \include, I am getting automatic page break which I don't want. How can I avoid it?

I am attaching a screenshot for better understanding.

Thanks.

Answer 1

Use \input instead since \include automatically inserts a page break.

I am currently on my phone and I have limited access to the internet. But I would be surprised if there in not already a similar question on this site :).