Logical Expressions

The TRUE/FALSE values of relational expression can be combined using AND and OR:

"Monday" <> "Thursday"  AND "June" = "June"
---------------------       ---------------
        true                     true
         ---------------------------
                    true

Remember that AND requires both relational expressions to be TRUE for the entire logical expression to be TRUE. If one or both relational expressions are FALSE, then the entire logical expression is FALSE:

"Monday" <> "Thursday"  AND "June" = "December"
---------------------       ---------------
        true                     false
         ---------------------------
                    false

Say that the art museum has a new policy: it will not charge admission on Thursdays and it will not charge admission during the month of August. Here is the changed program:

' Admission Checker
' August is now free
'
PRINT "What day is it"
INPUT DAY$
PRINT "What month is it"
INPUT MONTH$
IF DAY$ <> "Thursday" AND MONTH$ <> "August" THEN
  PRINT "Charge Admission"
ELSE
  PRINT "Free Day"
END IF
'
END