Character I/O
- nl
- nl/0 (B)
A new line is started on the current output stream.
- get0(N)
- get0/1 (B)
Nis the ASCII code of the next character from the current input stream.
If the current input stream reaches its end of file,
a -1 is returned (however, unlike in C-Prolog,
the input stream is not closed on encountering end-of-file).
- get(N)
- get/1 (B)
N is the ASCII code of the next non-blank printable character
from the current input stream. It has the same behaviour as get0
on end of file.
- put(N)
- put/1 (B)
ASCII character code N is output to the current output stream.
N must be an integer.
- tab(N)
- tab/1 (B)
N spaces are output to the current output stream.
N must be an integer.