Blockchain for Teens: With Case Studies and Examples of Blockchain Across Various Industries

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

B. Wu, B. WuBlockchain for Teenshttps://doi.org/10.1007/978-1-4842-8808-5_5

5. Smart Contracts and Dapps: From Theory to Practice

Brian Wu¹   and Bridget Wu¹

(1)

Livingston, NJ, USA

 

Brian Kernighan, a computer scientist, wrote the first “Hello, World!” program in 1972 for the language B to be used internally at Bell Labs. Brian wrote a manual titled A Tutorial Introduction to the Language B to demonstrate how to use B’s language. From there, this popular text spread quickly. It was used in a Bell Laboratories memo in 1974, as well as The C Programming Language in 1978. “Hello, World!” remains popular to this day. It became a standard for new programmers for ...