Including functions from my own headers

Like this:

FUNCTION.H:

// Header guards, to ensure this file gets included only once:
#ifndef FUNCTION_H_
#define FUNCTION_H_

// Function declaration
void myFunction(void);

#endif

FUNCTION.CPP:

// include the declaration
#include "function.h"
#include <iostream>

// Function definition
void myFunction() {
     std::cout << "myFunction called!";     
}

MAIN.CPP:

// include the declaration
#include "function.h"

int main () {
    myFunction(); // call the function
    return 0;
}

Thanks! Works now.

Well I say works...
It just loads, puts green background - how I want - but then multicoloured lines flash round the edge of the screen - not what I want. I'll have another look at the code later...

Thanks! Works now.

Well I say works...
It just loads, puts green background - how I want - but then multicoloured lines flash round the edge of the screen - not what I want. I'll have another look at the code later...

Whatever the problem is, it's not nick's code, which should work whether one understands the code or not. Multi-cored lines flashing? nick's example is a console application. No lines, Certainly not flashing. A console screen should pop up and "myFunction called" should display. You are in Dev C++, so I believe the console screen DOES NOT stay open. So add this line right before "return 0;"

cin.get ();

Now nick's sample program should definitely stay open and you should see "myFunction called". Press the "Enter" key to end the program.

If this does not work, there's a decent chance that you don't have your Dev C++ project set to be a simple console project or you aren't compiling it or something. Please report back with the results.

[EDIT]
Or is the code that you're going to look at your original code? When you are describing what happens, are you referring to nick's code or some other code?
[/EDIT]

No, no it's my code, written in C++ with Allegro.