get_char/[1,2]
[ISO]get_char(
-Char)
get_char(
+Stream,
-Char)
Unifies Char with the next char from Stream or
with end_of_file
if there are no more characters.
Valid input text stream,
defaults to the current input stream.
end_of_file
]
Stream errors (see ref-iou-sfh-est), plus:
existence_error