programming

Logical Operators

“Programs must be written for people to read, and only incidentally for machines to execute.”

Harold Abelson, Structure and Interpretation of Computer Programs

Logical operators are generally symbols or words which connect two or more expressions that allow a program to make a decision based on a given set of conditions.

Logical operators usually control the program flow and are frequently used with the if, while, or some other control statement.

Three (3) Types Logical Operators

  1. Logical AND operator (&&): For logical AND operators, both conditions must be true for the statement to be true. If one of them is false, then the program will return false.
//Example
let a, b;
a = 3; b = 4;
console.log(a === 3 && b === 4) //TRUE
console.log(a === 3 && b === 3) //FALSE

2. Logical OR operator ( || ): For logical OR operators, one of the operands just have to be true for the statement to be true.

//Using variables from our first example
console.log(a === 3) || (b === 4) //TRUE
console.log(a === 3) || (b === 3) //TRUE

3. Logical NOT operator ( ! ): This is used to reverse the logical state of its operands. If a condition is true, then the Logical Not will make it false.

//Using variables from our previous example
console.log(!(a === 3)) //FALSE
LANGUAGEANDOR NOT
C++&&||!
C#&&||!
Java&&||!
JavaScript&&||!
PHP&&||!
Pythonandornot
Swift&&||!

Recent Posts

Trump Extends U.S. TikTok Sale Deadline to September 2025

In a surprising turn of events, former President Donald Trump announced on June 19, 2025,…

1 week ago

Master React Native Flexbox

Flexbox is a powerful layout system in React Native that allows developers to create responsive…

2 weeks ago

Getting Started With TensorFlow

"The journey of a thousand miles begins with a single step." — Lao Tzu Welcome…

2 weeks ago

Your Mind is a Supercomputer

We often describe ourselves as "processing" information, "rebooting" after a bad day, or feeling "overloaded"…

3 weeks ago

What is a QR Code And How to Create One

QR codes have evolved from a niche tracking technology to an indispensable digital connector, seamlessly…

4 weeks ago

Will AI Replace Software Developers?

Artificial Intelligence (AI) has made remarkable progress in recent years, transforming industries such as healthcare,…

1 month ago