• User-friendly interface
• Basic arithmetic operations
• Clear and reset functionality
• Terminal mode for quick calculations
• Error handling for invalid inputs

• Qt framework (version 6)
• C++ compiler
• CMake (for building the project)
• Qt Creator (optional, for development)
• Terminal (for terminal mode)
• Git (for cloning the repository)

• Launch the application to open the calculator interface.

• Use the buttons to perform calculations.

• To clear the current input, use the "Clr" button on the interface.

• For terminal mode, run the application with the --input flag:

   ./qt-calculator --input "2 + 2"

• The result will be displayed in the terminal.

Contributions are welcome! Please fork the repository and create a pull request with your changes.

• Built using the Qt framework.
• Inspired by the need for a simple and effective calculator application.
• Thanks to the open-source community for their support and contributions.
• Special thanks to Danil Losev for creating and maintaining this project.
• Icons made by icons8 from www.icons8.com

For any questions or suggestions, please contact Danil Losev at

• Email: dlosevdan@gmail.com
• GitHub: Danil-Losev

Enjoy using Qt-calculator!