i student in computer science, , learning logic programming prolog.
i have found interesting prolog interpreter, vtprolog (https://github.com/johnicholas/hello-github/blob/master/prolog-in-hundreds-of-loc/vtprolog-in-c/vtprolog.pas).
to know more prolog, trying compile source code. and, got success turbo pascal 7.0, failed free pascal 2.6.4.
- vtprolog.pas(1195,8) error: identifier not found "l"
- vtprolog.pas(1198,30) error: identifier not found "l"
- vtprolog.pas(1199,16) error: identifier not found "l"
- vtprolog.pas(1203,34) error: identifier not found "l"
- vtprolog.pas(1611) fatal: there 4 errors compiling module, stopping
- vtprolog.pas(0) fatal: compilation aborted
is there way compile both turbo pascal 7.0 (without requirement) or free pascal 2.6.4 on windows xp?
without knowing pascal think problem part of line 1159:
procedure print_functor (* l : node_ptr *) ;
has been commented out. change to:
procedure print_functor (l : node_ptr) ;
and should compile - @ least did when tried ideone (using free pascal compiler). if program work intended can't say.
