get_extension - Returns a pointer to the extension of a filename. Allegro game
programming library.
#include <allegro.h>
char *get_extension(const char *filename);
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));
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(3), put_backslash(3), replace_extension(3)