file_time - Man Page

#include <allegro.h>

time_t file_time(const char *filename);

Returns the modification time (number of seconds since 00:00:00 GMT  1/1/1970) of a file. If the file does not exist or an error occurs, it  will return zero and store the system error code in errno.

file_exists(3), file_size_ex(3)

exists(3), file_exists(3), file_size_ex(3).