Teach your child the ABC's of programming languages! Hello World! is a book designed to create an early interest for learning programming, and encourages even the youngest of entry-level developers to enjoy learning about computer science. Every programmer knows of the famous "Hello World" program. As the name implies, this program is one that displays the phrase "Hello World" to the user. This program is usually the first piece of code someone writes when learning a new programming language. There are hundreds of programming languages, with new ones being created every year. Each language offers something different from the last, no two are exactly the same. This book shows you how the Hello World program is written in 26 different programming languages. See how many differences you can spot even with this simple block of code!