python-cli-calculator

A robust command-line calculator in Python featuring continuous input validation, exception handling, and zero-division protection.

Python CLI Calculator with Input Validation

📌 Project Overview

A robust, text-based interactive calculator built in Python. This project demonstrates foundational programming logic, control flow, and a strong emphasis on user experience by actively preventing program crashes caused by invalid data entry.

⚙️ Features

• Input Validation: Utilizes while loops to ensure the program only accepts valid numbers and designated math operators.
• Exception Handling: Implements try-except blocks to gracefully catch ValueError instances when a user inputs text or special characters instead of numbers.
• Zero-Division Protection: Contains edge-case logic to prevent the program from crashing when a user attempts to divide by zero.
• Flexible Operators: Recognizes multiple variations of standard operators (e.g., *, X, x for multiplication and /, ÷ for division).

🧠 Technical Concepts Demonstrated

Building this calculator allowed me to practice and apply several core Python concepts:

• Type Casting: Converting string inputs into float data types for precise mathematical calculations.
• Control Flow: Using if/elif/else statements to route the program's logic based on user input.
• Infinite Loops & Break Statements: Managing application state to keep prompting the user until correct data is provided.

🚀 How to Run

1. Ensure you have Python installed on your system.
2. Clone this repository or download the calculator.py file.
3. Run the following command in your terminal:

   python calculator.py