Truth table for a pseudocode

Question

I am looking at the truth table for following pseudocode.

IF year = 11 AND (grade < target OR target >7) THEN
   SET revision_class TO true
END IF

I want to know whether the below truth table is correct or not. If it is correct, please explain me the row 5. Because it looks not correct to me:

Answer 1

Indeed, the last column has an error in the 5^th row. That column should be exactly the same as the one-but-last column.

Another thing that is not right is the pseudo code: it is incomplete. If the IF condition is not true, then the variable revision_class is undefined. To have this truth table, the pseudo code should start by setting that variable to false:

SET revision_class TO false
IF year = 11 AND (grade < target OR target > 7) THEN
   SET revision_class TO true
END IF

Or more direct:

SET revision_class TO (year = 11 AND (grade < target OR target > 7))

Normally you would first list the input booleans in the truth table, so I would put the column Year = 11 before the OR one. As the last column really is a copy of the previous one, you might exclude it, but I will keep it in here:

grade < target	target > 7	Year = 11	grade < target OR target > 7	Year = 11 AND (grade < target OR target > 7)	revision_class
0	0	0	0	0	0
0	0	1	0	0	0
0	1	0	1	0	0
0	1	1	1	1	1
1	0	0	1	0	0*
1	0	1	1	1	1
1	1	0	1	0	0
1	1	1	1	1	1