Answer 1

Remember pointers store memory address. So:
- if the argument is a pointer, you'll be receiving the address of the entity passed in argument
- if the pointer is returned, you're returning the addres of something created/manipulated by the function
- if is a function's pointer e.g: "void (*fun)()" you're manipulating a routine in a specified location.

in C, pointers have specific operators to give you access to it's content(*, ->) or make references (&)