ISO Pascal reference manual

BEGIN
END.
print;
*ERROR 96 -- the control variable is not of a type
which defines a range of values
Appendix A
The control variable of a FOR statement must have a type which defines a
range of values (an ordinal type). This type must be integer, char, boolean,
enumerated type, or a subrange type.
PROGRAM fail(output);
VAR x : real;
BEGIN
END.
FOR x := 1 TO 10 DO lx isn't ordinal]
writeln('hello');
*ERROR 97 -- either TO or DOWNTO is required here
When specifying a FOR statement the initial and final values for the
control variable must be separated by either TO or DOWNTO.
PROGRAM fail(output);
VAR j:integer;
BEGIN
END.
FOR j := 1, 10 DO
writeln('hello ' ):
*ERROR 98 -- the initial value cannot be assigned to
The initial value of a FOR loop cannot be assigned to the loop control
variable because it is not of a suitable type or not in the correct
range.
PROGRAM fail(output);
TYPE days =0(sun, mon, tue, wed, thurs, fri, sat);
week = mon..fri;
VAR w : week;
BEGIN
Pascal Issue 1 79