Logical Operators

What is a Logical Operator?

A logical operator is one or two symbols or a keyword that tells the computer how to combine conditional statements.

The result of using a logical operator is a boolean value (true or false).

See this page for an overview of other types of operators.

The most common logical operators are:

• && (Logical AND)
• || (Logical OR)
• ! (Logical NOT)

In the example below, we use the && operator to combine two conditions:

print(10 == 5 and 10 != 5)

console.log(10 == 5 && 10 != 5);

System.out.println(10 == 5 && 10 != 5);

cout << (10 == 5 && 10 != 5);

In the example above, the left side 10 == 5 is false, and the right side 10 != 5 is true. The logical operator && requires both sides to be true for the result to be true, so the result is false.

Try the simulation below to see the result of different logical operators:

print(a && b)

print(a || b)

print(!a)