c++ structs

I am getting pretty frustrated, I cannot for the life of me figure out why I am getting the errors that I am. The program I need to write is for my class, we had just gone over using structs in class and the program needs to use a couple of structs to create a sort of phonebook.

I have included the files that I have for the program

the way the main program is now I get the following error when i compile using the command

g++ -o phonebook_main.cpp

phonebook.h:18: error: ISO C++ forbids declaration of 'vector' with no type
phonebook.h:18: error: invalid use of '::'
phonebook.h:18: error: expected ';' before '<' token
phonebook_main.cpp: In function 'int main(int, char**)':
phonebook_main.cpp:56: error: 'struct Phonebook' has no member named '_entries'
phonebook_main.cpp:71: error: 'struct Phonebook' has no member named '_entries'

but if I alter the #includes in the main file to this

#include "phonebook.h"

#include <iostream>
#include <string>

This is the way the main program was given to us, so it will probably need to work with the includes ordered this way.

I get these errors
phonebook.h:11: error: 'string' in namespace 'std' does not name a type
phonebook.h:17: error: 'string' in namespace 'std' does not name a type
phonebook.h:18: error: ISO C++ forbids declaration of 'vector' with no type
phonebook.h:18: error: invalid use of '::'
phonebook.h:18: error: expected ';' before '<' token
phonebook.h:24: error: expected unqualified-id before '&' token
phonebook.h:24: error: expected ',' or '...' before '&' token
phonebook.h:24: error: ISO C++ forbids declaration of 'parameter' with no type
phonebook.h:26: error: expected unqualified-id before '&' token
phonebook.h:26: error: expected ',' or '...' before '&' token
phonebook.h:26: error: ISO C++ forbids declaration of 'parameter' with no type
phonebook_main.cpp: In function 'int main(int, char**)':
phonebook_main.cpp:30: error: 'struct Phonebook' has no member named '_file_name'
phonebook_main.cpp:51: error: cannot convert 'std::string' to 'int' for argument '2' to 'int lookup_name(const Phonebook&, int)'
phonebook_main.cpp:57: error: 'struct Phonebook' has no member named '_entries'
phonebook_main.cpp:72: error: 'struct Phonebook' has no member named '_entries'
phonebook_main.cpp:84: error: cannot convert 'std::string' to 'int' for argument '2' to 'void add_to_lists(Phonebook&, int)'

Any help would be greatly appreciated, on a side note, the functions file that I wrote compiles fine with the header file. I am assuming I messed up something in my header file because the file he provided worked for everyone else in the class.

It looks like the errors stem from missing includes in phonebook.h. The compiler reads and processes each file from top to bottom, so you need to include the appropriate headers for std::string and std::vector before they're used.

First thing I would do is add
#include <string>
#include <vector>

to phonebook.h Then see how far this would take you.

wow...I cant believe I missed that, thanks for the help, it compiles after I added #include <string> and <vector>. Thats what I get for programming right after I woke up.

Thanks for the help speedo and richard j