calculator_gui

GUI Calculator

A simple yet efficient GUI-based calculator built with Python’s tkinter library. The calculator performs basic arithmetic operations and features an intuitive and user-friendly interface.

🎯 Objective

To create a responsive and visually appealing calculator application that supports basic mathematical operations.

🛠️ Features

Basic Operations:
- Perform addition, subtraction, multiplication, and division.
Clear Button:
- Reset the calculator’s input field with a single click.
Error Handling:
- Displays a user-friendly error message for invalid expressions.
Equal Button:
- Evaluate the entered mathematical expression.
Responsive UI:
- Dynamically resizes and adjusts to window size.

📦 Requirements

Python 3.x
Libraries:
- tkinter (pre-installed with Python)

🚀 How to Run

Clone the repository or copy the source code into a Python file named calculator.py.
Open your terminal or command prompt.
Navigate to the directory containing the file.
Run the script:
```
python calculator.py
```

🖥️ Usage

Launch the application by running the script.
Use the buttons to perform operations:
- Enter numbers and arithmetic operators (+, -, *, /) using the provided buttons.
- Clear (C): Resets the input field.
- Equal (=): Computes the result of the entered expression.
Close the application by clicking the Exit button or using the standard close button on the window.

🛡️ Error Handling

Invalid expressions (e.g., 5++2 or 10/0) are handled gracefully with an error message displayed in a popup.

Functional Demonstration:

Enter a calculation (e.g., 5+3) and press =:
- Output: 8
Press C to clear the display.
Enter another calculation (e.g., 10/2*3) and press =:
- Output: 15

✨ Customization

You can modify the appearance of the calculator by changing:

Colors: Adjust button, background, or text colors in the code.
Fonts: Update the font attributes to suit your preferences.