outputs a single character to a stream.
put_char/1 outputs a single character to the current outputstream.
put_char/2 outputs a single character to the stream named in the first argument.
Stream output text stream Char character
Assume the content of a stream S is abcdefg and the stream position is behind the last character.
| put_char(S, h). | Succeeds. The content of stream S is now abcdefgh. |
These predicates are part of the ISO-Prolog Standard.
get_char/1/2, get_code/1/2, peek_char/1/2, peek_code/1/2, put_code/1/2, nl/0/1, current_output/1, set_output/1.