determines creation date of file
INCLUDE 'iolib.h' filedate(Date,"tmp.dat")
filedate(Date,FileName) (o,i)
integer(Date) (o) creation date of the file
string(FileName)(i) name of the file to be examined
The creation date of the file name FileName returned.
filedate(file1,X1), filedate(file2,X2), X1 > X2, write("file one created more recently"),nl.
A runtime error if the file is not found.
prolog-process, client-server, object