How much flour do you have
? 6
How much sugar do you have
? 4
You have enough ingredients

AND Operator

When execution gets to the IF statement, it finds that

FLOUR >= 4   —— true, because 6 >= 4

and

SUGAR >= 2    —— true, because 4 >= 2

Since both sides are true, the two part question gives us TRUE.

AND is used in a logical expression to insist that there is a TRUE on both sides:

this side must be true  AND this side must be true

If both sides are true, the entire AND expression is true. If either side (or both) are false, the entire AND expression is false. AND is called a logical operator because it combines two true/false values into a single true/false value.

A compact way of saying what AND does is:

• true AND true = true     -- This is the only true.
• false AND true = false
• true AND false = false
• false AND false = false

AND is used to check that every requirement is met.

FLOUR >= 4 AND SUGAR >= 2