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C++ classes questions?

I took c++ a long time ago in school, now I am trying to relearn everything again. I think this is a very stupid question but I don't care, here it goes:

Code:

//test.cpp



#include "point.h"



using namespace std;



int main()

{



  Point pt1;



  pt1.set_x(1234);

  pt1.print_x();



}

----------------------------------------------------------------

Code:

//point.h



#ifndef POINT_H

#define POINT_H

#include "point.cpp"



class Point

{



 public:

  void set_x( int new_number );

  void print_x();



 private:

  int x;



};





#endif

------------------------------------------------------------------

Code:

//point.cpp



#include <iostream>



void Point::set_x( int new_number)

{

  x = new_number;

}





void Point::print_x()

{

  cout << "\nThe value for x is : " << x << endl << endl;

}

Ok so that is my code, as you can see three (3) files.
When I try to compile this is what happenes:

bash-3.00$ g++ test.cpp
In file included from point.h:3,
from test.cpp:1:
point.cpp:3: error: syntax error before `::' token
point.cpp:9: error: syntax error before `::' token
bash-3.00$

What am I doing wrong here. I have tried to do it many different ways, but nothing seems to work. Please, help!!

point.hh shouldn't include point.cc, but point.cc should include point.hh; to compile:
$ g++ test.cc point.cc

(use your favorite extensions instead of hh and cc if you care -- but emacs gets c++-headers right for .hh but not .h; just a hint)

Hope this helps,

Jonas

Hey,

that is not working. If I #include point.h in point.cpp i get different compile errors.

To make sure, I got some code, straight our of the book and typed it in. After compiling I got the same kind of errors. The code involves a time.cpp, time.h, and a time_test.cpp. when I compile this is what happens:

Code:

lab35->gcc time_test.cpp

/tmp/cco9tHMh.o(.text+0x18): In function `main':

: undefined reference to `Time::Time()'

/tmp/cco9tHMh.o(.text+0x28): In function `main':

: undefined reference to `std::cout'

/tmp/cco9tHMh.o(.text+0x2d): In function `main':

: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'

/tmp/cco9tHMh.o(.text+0x3c): In function `main':

: undefined reference to `Time::printMilitary()'

/tmp/cco9tHMh.o(.text+0x4c): In function `main':

: undefined reference to `std::cout'

/tmp/cco9tHMh.o(.text+0x51): In function `main':

: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'

/tmp/cco9tHMh.o(.text+0x60): In function `main':

: undefined reference to `Time::printStandard()'

/tmp/cco9tHMh.o(.text+0x72): In function `main':

: undefined reference to `Time::setTime(int, int, int)'

/tmp/cco9tHMh.o(.text+0x82): In function `main':

: undefined reference to `std::cout'

/tmp/cco9tHMh.o(.text+0x87): In function `main':

: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'

/tmp/cco9tHMh.o(.text+0x96): In function `main':

: undefined reference to `Time::printMilitary()'

/tmp/cco9tHMh.o(.text+0xa6): In function `main':

: undefined reference to `std::cout'

I am not posting the code here, because the code is not mine, I assume it is copyrighted. But it is the same kind of errors that I get with the code that I posted first. Except, obviously that I change the #includes as suggested.

Use g++ instead of gcc or at an -lstdc++ ot your compile command.

Okay... I made a few changes...

point.hh

Code:

#ifndef POINT_HH 

#define POINT_HH



class Point

{



        public:

                  void set_x( int new_number );

                    void print_x();



                      private:

                      int x;



};





#endif

point.cc

Code:

#include <iostream>

#include "point.hh"



using namespace std;



void Point::set_x( int new_number)

{

          x = new_number;

}





void Point::print_x()

{

        cout << "\nThe value for x is : " << x << endl << endl;

}



int main (void) {

        return 0;

}

This compiled cleanly and with no warnings using "g++ -Wall -o point point.cc". Naturally it doesn't do anything, but you could put test calles to set_x and print_x in main if you'd like.