Listing 4. Copy the negated bitmap to the onscreen window.

//Copy the modified bitmap to the onscreen window // immediately below the original image. blit(picA, screen, 0,0,0,330,324,330); //Block and wait until the user presses a key. readkey(); //Destroy bitmaps to avoid memory leaks. destroy_bitmap(picA); return 0;//Return 0 to indicate a successful run. }//end main function END_OF_MAIN()