Do I need to compile the header files in a C program?

Question

Sometimes I see someone compile a C program like this:

gcc -o hello hello.c hello.h

As I know, we just need to put the header files into the C p

Answer 1

You don't need to compile header files. It doesn't actually do anything, so there's no point in trying to run it. However, it is a great way to check for typos and mistakes and bugs, so it'll be easier later.