This project is a simple calculator built as the final project of the Foundations Course from The Odin Project
It can perform basic arithmetic operations and accepts both button clicks and keyboard input.

• Operates on numbers with a sign (positive/negative).
• Supports the basic arithmetic operators: +, -, ×, ÷.
• Handles floating point numbers using the . button.
• Accepts keyboard input for faster usage.
• DEL button deletes one number at a time.
• CLEAR button clears the entire input.

• Backspace → acts as DEL (delete one element).
• Number keys (0–9) → input numbers.
• Arithmetic keys (+ - * /) → input operators.
• Enter / = → evaluates the expression.

• Initially, a flag variable was used to determine which number should be taken as input.
  As the project grew, managing this flag became messy so I had to find a different approach.
• Refactored the logic to depend on the operator state, which was much easier to track and extend.
• This was my first attempt at responsive design. The calculator currently renders smaller than expected on some devices, but improving responsiveness will be a focus for future updates.

Made by Shaun 😊