🧮 Multi-Number Calculator (Python)

A simple command-line calculator built in Python that supports multi-number input, advanced operations, and maintains calculation history.

🚀 Features

• Supports operations:
  • Addition +
  • Subtraction -
  • Multiplication *
  • Division /
  • Power ^
  • Percentage %
  • Square root sqrt
• Commands:
  • history — Show past calculations
  • clear — Clear history
  • exit — Quit the calculator
• Saves history to a history.txt file

🖥️ How to Run

1. Make sure Python is installed.
2. Open a terminal in your project directory.
3. Run the app:

• python calculator.py

✨ Examples

Addition

Enter operator or command: +
Enter numbers: 10 20 30
10 + 20 + 30 = 60

Square root

Enter operator or command: sqrt
Enter a number: 25
√25 = 5

📌 Notes

• ^ (power) and % (percentage) require exactly 2 numbers.
• sqrt only accepts a single positive number.
• All operations are rounded to 3 decimals if needed.
• The history file can be excluded from version control using .gitignore.

🔮 Future Enhancements

Here are some features planned or suggested for future versions:

✅ GUI Version using Tkinter

• User-friendly interface with buttons and display

• Input fields for numbers and operations

📃 License

This project is free and open-source for personal, educational, or learning use.