ISO Pascal reference manual

BEGIN
END.
show; [parameter needed here}
*ERROR 121 -- program parameter has not appeared in a
VAR statement
< name > was specified in the parameter list following the initial
PROGRAM statement. Except in the case of INPUT and OUTPUT all
such parameters must also appear in the outermost VAR statement so that
they may be given a type.
PROGRAM fail(output, data);
(should be VAR data:text here}
BEGIN
readln(data); (data has not been defined}
END.
*ERROR 122 -- program parameter is restricted to being
a file
This implementation restricts the type of the objects which appear in the
parameters following the initial PROGRAM statement to being files. An
attempt to give them any other type will invoke this message.
PROGRAM fail(thing);
VAR thing : integer;
BEGIN
END.
*ERROR 123 -- program parameter may not be a file of
pointers
This implementation of Pascal prohibits the use of files of pointers as
program parameters.
PROGRAM fail(ipoint);
TYPE pi = linteger;
VAR ipoint : FILE OF pi;
BEGIN
END.
88 Pascal Issue 1