How to bring a child process running in the background to the foreground

Question

If I used fork() and execv() to spawn several child processes running in the background and I wanted to bring one of them to the foreground, how could I do that?

I am trying to write a shell that can start processes either in the foreground or background.

Answer 1

"Background" and "foreground" are not terms used generically for processes, but rather only apply to shells which can wait for jobs on demand.