linking user-made libs

[Nobody/Anonymous]

I have a .h file, a .cpp implementation file, and a .cpp main. My implementation includes the .h file, and my .cpp main includes the .h file. all files are in the same directory. when i compile my main, i get errors of "undefined function xxxxxx" for each function in my .h file. What am i doing wrong?

[Nobody/Anonymous]

are you linking against the cpp implementation file?
From what you say it looks like you are just including the header file.

Try the following command:
gcc -o main.exe main.cpp otherfile.cpp

see which messages are printed.

[Nobody/Anonymous]

//.h file

#ifndef circle_h
#define circle_h

void printfunction(double myint);

#endif

//.cpp file

#include "circle.h"
#include <iostream.h>

void printfunction(double myint)
{
cout<<"test"<<endl;
}

//driver

#include <iostream.h>
#include "circle.h"
int main()
{
printfunction;
return 0;
}

----------------------------------------------------------
where am I including/not including files? also, can I do this without making a project? if not, which project should i choose (windows exe, empty project, etc)? I've never used project before. thanks.

[Nobody/Anonymous]

You have to have both of your .cpp files in the project (if you haven't created a project yet, do so). That way Dev knows to compile them both, instead of just the one you're working on.

[Curtis Sutter]

The project you are building in a console.

Curtis