Ruby Programming Basics: Build a Command-Line Calculator

Starting your programming journey can feel overwhelming without a concrete project to work on. This text-based course guides you through your very first Ruby application, turning abstract syntax into a functional command-line tool. You will transition from writing basic lines of code to constructing a fully operational addition calculator. By working through structured written explanations and code examples, you will understand how programs receive, process, and display data. What you will learn: 1. Understand foundational Ruby syntax, variables, and data types. 2. Capture and process user input from the terminal using command-line methods. 3. Convert string inputs into numbers safely to perform arithmetic calculations. 4. Apply modern string interpolation techniques to format and display clear output. 5. Implement basic error handling to manage invalid user inputs gracefully. The course begins with core Ruby terminology and basic environment concepts before guiding you step-by-step through writing, testing, and refining your calculator logic. This program is designed specifically for beginners with no prior programming experience who want a hands-on, highly structured introduction to Ruby. Start reading today to write your first functional Ruby program.