A Rust Program That Runs for 10↑↑15 Steps

This article explores the creation of an exceptionally long-running Rust program. Starting with the fundamental operation of addition (increment), the author meticulously builds up to multiplication (multiply), exponentiation (exponentiate), and finally tetration, culminating in a program that calculates the gargantuan number 10↑↑15. The emphasis is on in-place operations, avoiding memory copies and temporary variables to ensure the program executes for the designed number of steps. The article clearly explains the implementation details with concise code examples, making it valuable for learning algorithm design and Rust programming.