12.1 Name three expressions or objects that evaluate to a pointer. 12.2 If p, which is set to &x in main, is passed as an argument to a function, can the latter change the value of x? 12.3 Explain...

12.1 Name three expressions or objects that evaluate to a pointer.

12.2 If p, which is set to &x in main, is passed as an argument to a function, can the latter change

the value of x?

12.3 Explain with a suitable example how a function can return multiple values using arguments

and the return statement. In what circumstances could one still need the return statement?