A nudge in the right direction?

Hello!
I am takeing a computer science class in college, and am on my final program but am haveing some issues.
This is the first use of Structs that we have had in a program and im not totaly sure how they work....
I know how to do like 80% of the program but am hopeing someone could give me a nudge with how to work the structs for my program...
(the assignment is posted to the web at this adress: http://www.cs.pdx.edu/~karlaf/CS161_...ign%20%236.htm )
i know how to acess the files, how to pull info out of them with in.get and read them to the arrays, just need to figure out how to get the structs working, and also how to manipulate the functions with arguments.

if anyone has 5-10 min of total bordom i would really appreciate any advie!
Thank you in advance!

What code do you have written? Post your attemped solution and more than likely you will get help from many people.

ok, i only have snippits, not anything solid, im just really hung up on the struct thing, cuz i not even sure how to pass them (by reference) through functions.....
Code:::
struct fullname
{
char firstname[15];
char middlename[15];
char lastname[15];
};

struct listing
{
fullname name;
char title[31];
char phone[15];
int officenum;
};

void display(listing & fullname)
{
// Define local variables
char firstname[15];
char middlename[15];
char lastname[15];
char title [31];
char phone[15];
int officenum;
char end_condition;

// Read in from file
ifstream in;
in.open ("direct.dat");
in.get (firstname, 15, ' ' || ';');
in.get (end_condition);


}
:::Code

hope that helps with the direction im trying to go.
thanks!