   Allegro Errors
  So I finally got Allegro up and running.I ran this code to test it, and it worked.#include <allegro.h> // You must include the Allegro Header fileint main(int argc, char *argv[]) {allegro_init(); // Initialize Allegroinstall_keyboard(); // Initialize keyboard routinesset_gfx_mode(GFX_AUTODETECT, 640,480,0,0); // Change our graphics mode to 640x480readkey(); // Wait untill a key is pressedreturn 0; // Exit with no errors}END_OF_MAIN() // This must be called right after the closing bracket of your MAIN function.   // It is Allegro specific.I was following a tutorial, and that was the first thing just to show how to initialize and setup the screen, etc.(Just wondering, is this supposed to show up in full screen? SDL didn't do that, but this did, and I wasn't sure if thats how it did it)Then I went to the next lesson which was to add a bitmap. Heres my code:#include &lt;allegro.h&gt; // You must include the Allegro Header fileint main(int argc, char *argv[]) {allegro_init(); // Initialize Allegroinstall_keyboard(); // Initialize keyboard routinesset_gfx_mode(GFX_AUTODETECT, 640,480,0,0); // Change our graphics mode to 640x480BITMAP *my_pic = NULL; //Declare a BITMAP called my_pic, setting it to NULLmy_pic = load_bitmap("picture.bmp", NULL); // Load our pictureblit(my_pic, screen, 0,0,0,0,480,360);//Draw the whole bitmap to the screen at (0,0)readkey(); // Wait untill a key is presseddestroy_bitmap(my_pic); //Release the bitmap datareturn 0; // Exit with no errors}END_OF_MAIN() // This must be called right after the closing bracket of your MAIN function.   // It is Allegro specific.So I'm like lets see how images work blah blah. I compile it and get this:main.obj : error LNK2019: unresolved external symbol _screen referenced in function "int __cdecl _mangled_main(int,char * * const)" (?_mangled_main@@YAHHQAPAD@Z)C:\Users\Austin\Documents\Visual Studio 2008\Projects\allego\Profile\allego.exe : fatal error LNK1120: 1 unresolved externalsWhat went wrong?   