append_filename - Man Page

#include <allegro.h>

char *append_filename(char *dest, const char *path, const char *filename, int size);

Concatenates the specified filename onto the end of the specified path,  storing at most `size' bytes into the `dest' buffer. If `path' doesn't have a trailing path separator, the function will append one if needed. You can use the same buffer both as input and output because Allegro internally works on a copy of the input before touching `dest'. Example:

   append_filename(buf, "/home/user",
                   "prog.bin", sizeof(buf));

Returns a copy of the `dest' parameter.

replace_filename(3)

replace_filename(3).