get_extension - Returns a pointer to the extension of a filename. Allegro game programming library.

       Finds out the extension of the filename (with or without path information). Example:

          get_executable_name(name, sizeof(name));
          allegro_message("The binary has the extension `%s'\n",
                          get_extension(name));

       get_extension - Returns a pointer to the extension of a filename. Allegro game programming library.

       Returns  a  pointer to the portion of `filename' where the extension starts, or a pointer to the trailing
       null character if there is no filename or it doesn't have extension.

get_filename(3alleg4), put_backslash(3alleg4), replace_extension(3alleg4)

Allegro                                           version 4.4.3                           get_extension(3alleg4)

#include<allegro.h>char*get_extension(constchar*filename);