varaible trouble

i have got multiple .c files, and i wish to use the same variable throughout the files. "i" the variable, is used as a counter of members in the array. how do i delclare or initialise this variable so that i can use it in all of the .c files? when i delcare the varibale in each file i get erros saying that it has allready been declared in the other files, and, wheni dont declare it, i get errors messages tellgn me i need to declare it. any ideas people? cheers.

Declare i as a global variable in one of your modules and then extern it to the other modules.

In main.c:

Code:

---

int i;

---

In remaining .c files:

Code:

---

extern int i;

---

In one file, and only one file declare your variable as you normally would. In all other files, add the word "extern" in front of your variable. As an example:

File1:

#include ?????
#include ?????

int i;

int main()
{
}


File2:

#include ?????

extern int i;

function1()
{
}

function2()
{
}


File3:

#include ?????
#include ?????
#include ?????

extern int i;

function3()
{
}

function4()
{
}

function 5()
{
}


This should give you a hint as to how to proceed.

I think this should work:
Globally in the main file:
int iSomething = 0;

In all files which should share this instance:
extern int iSomething;

I'm just too fast for you guys :p

You get a quick response on this board....