The logical AND ( More generally, the operator returns the value of the first falsy operand encountered when evaluating from left to right, or the value of the last operand if they are
all truthy. Logical AND ( If a value can be converted to Examples of expressions that can be converted to false are: The AND operator preserves non-Boolean values and returns them as they are:
Even though the Short-circuit evaluation The logical AND expression is a short-circuit operator. As each operand is converted to a boolean, if the result of one conversion is found to be Consider the pseudocode below. (some falsy expression) && expr The
Operator precedenceThe AND operator has a higher precedence than the OR operator, meaning the
ExamplesUsing AND The following code shows examples of the
Conversion rules for booleansConverting AND to ORThe following operation involving booleans:
is always equal to:
Converting OR to ANDThe following operation involving booleans:
is always equal to:
Removing nested parenthesesAs logical expressions are evaluated left to right, it is always possible to remove parentheses from a complex expression provided that certain rules are followed. The following composite operation involving booleans:
is always equal to:
Specifications
Browser compatibilityBCD tables only load in the browser See alsoWhich structure tests a single variable against a series of exact matches?Chapter 03 Key Terms Review. Which of the following is the simplest statement you can use to make a decision?if statement is the most simple decision-making statement. It is used to decide whether a certain statement or block of statements will be executed or not i.e if a certain condition is true then a block of statement is executed otherwise not.
When you create a block you must place multiple statements within it true false?When you create a block, you must place multiple statements within it. When you use nested if statements, you must pay careful attention to placement of any else clauses. In the switch structure, break is followed by one of the possible values for the test expression and a colon.
When creating a truth table you must determine?Any decision can be made using combinations of just two types of comparisons: equal and not equal. When creating a truth table, you must determine how many possible Boolean value combinations exist for the conditions.
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