ISO Pascal reference manual

*ERROR 6 -- an illegal space has been detected in
The compiler has detected that an otherwise meaningless input sequence
could be made understandable by removing one or more spaces. The error is
usually caused by inserting spaces into the compound symbols such as < >,
< = , > = etc.
PROGRAM fail;
VAR j,k:integer;
BEGIN
END.
k := 0; (ok)
J : = 1; (wrong)
*ERROR 7 -- digits are required here
This message indicates that a numerical constant has been formed
incorrectly. The common cause is the omission of digits following a decimal
point or following the exponential marker 'E'.
PROGRAM fail;
VAR r : real;
BEGIN
END.
r := 1.; (should be 1.0;)
r := 1.2e; [should be 1.2e3 for example)
*ERROR 8 -- a space is required here
This message is given when a reserved word immediately follows a sequence
of digits without an intervening space. Even though there is no practical
reason why such input must be rejected, the unfortunate choice of wording
in the standard requires conforming compilers to report an error.
PROGRAM fail;
VAR j,k:integer;
BEGIN
k := 19;
IF k > 0THEN j := 12;
( ! space needed here)
j := 123MOD k;
48 Pascal Issue 1