Answer:

No. You need 4 cups of flour and 2 cups of sugar. Now you have more than enough flour, but not enough sugar, so you can't follow the recipe.

Review of Relational Expressions

In order to bake cookies two things must be true:

If one of these requirements is false, then you do not have enough ingredients. A QBasic program that follows this logic is:

' Cookie Ingredients Checker
'
PRINT "How much flour do you have"
INPUT FLOUR
PRINT "How much sugar do you have"
INPUT SUGAR
'
IF FLOUR >= 4 AND SUGAR >= 2 THEN
  PRINT "You have enough ingredients"
ELSE
  PRINT "You do not have enough"
END IF
'
END

The IF statement is asking a question with two parts:

IF FLOUR >= 4 AND SUGAR >= 2 THEN
   ----------     ----------
   flour part     sugar part

Each one of these parts is a relational expression (as in the previous chapters.) A relational expression looks at two numbers and gives you TRUE or FALSE.

QUESTION 3:

Say that you enter 9 for FLOUR and 1 for SUGAR. What answer (TRUE or FALSE) does each of the parts give you?

               
FLOUR >= 4  ________________

SUGAR >= 2  ________________