Thread: How to define, declare and initialize variables in another library?

Hello,


I've been mostly doing my libraries with embedded projects which is quite easy. But last night I wanted to test an accessor function which can initialize the functions in the other libraries.

So I decided to test that in CODE::BLOCKS, but I had some issues preparing and linking a library, which worked after couple attempts.

Then I wanted to declare a variable in that library but I got an error! Why? and what to do now?

My setup is as follows:

1. I have a folder for the application program which contains the main function.
2. There's another folder beside the application program folder and contains the test library. And I defined and also declared a variable in this library but I got the error.

Originally Posted by laserlight

The error message says something about macro expansion. You need to post more code, especially the code that uses the macro named car.

It's actually the one in the picture which is pointed by the red mark, that's where is I'm defining that name.

And calling it here:

Code:

#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <string.h>
#include "library_source_example.h"


int main()
{
    printf("%d\n",car);
    return 0;
}

I'm sorry wait ... it's my mistake now. I redefined another variable as

Code:

int car;

But keeping this thread now for the near incoming issues I get in developing libraries in code blocks. My goal is to develop a function that sets the timing for other functions in other libraries.

Originally Posted by laserlight

EDIT:
Ah, I see. This is a lesson you should learn: use the convention of fully uppercase macro names.

Sorry! My mistake.

I'm looking now for a solution to call other functions from other libraries which is easy, just include the library and call its function.

But now, I'm looking to develop a function which I can pass to it functions' names and the time required to activate that function. And that's what I don't know, is how to pass a function name.