[ Term I/O | The ECLiPSe Built-In Predicates | Reference Manual | Alphabetic Index ]
writeln(+Stream, ?Term)
The term Term is written on the output stream Stream according to the
current operator declarations. Equivalent to write(Stream,Term),
nl(Stream).
- +Stream
- Integer (stream number) or Atom (reserved or user-defined symbolic stream name).
- ?Term
- Prolog term.
Description
Used to write the term Term (followed by a newline) on the output stream
Stream according to the current operator declarations.
Fail Conditions
None.
Resatisfiable
No.
Exceptions
- (4) instantiation fault
- Stream is not instantiated.
- (5) type error
- Stream is not an atom or an integer.
- (192) illegal stream mode
- Stream is not an output stream.
- (193) illegal stream specification
- Stream is an illegal stream specification.
Examples
Success:
[eclipse]: open(file1,update,s), writeln(s, X + 2),
> writeln(s, Y + 3), close(s).
X = _90
Y = _78
yes.
[eclipse]: sh('cat file1').
_90 + 2
_78 + 3
yes.
Error:
writeln(S, a(b,c)). (Error 4).
writeln("string", a(b,c)). (Error 5).
writeln(9, X + 2). (Error 192).
writeln(atom, X + 2). (Error 193).
See Also
writeln / 1, write / 1, write / 2