Checkout Buddy

All in one application for helping the average shopper. 

Grocery Calculator

Grocery Calculator is a simple Flutter application designed to help you keep track of your grocery spending. It works similarly to a calculator but supports addition and multiplication operations. The app maintains a history of your calculations and allows you to edit them as needed.

Features

• Basic arithmetic operations: addition (+) and multiplication (x).
• Keeps track of all inputs and allows removal of selected inputs.
• Maintains a history of all equations.
• Allows editing of the history and updates the total accordingly.
• Simple and intuitive user interface.

Getting Started

Prerequisites

To run this project, you will need to have Flutter installed on your machine. You can follow the installation guide on the official Flutter website.

Installing

Clone the repository to your local machine:

git clone https://github.com/yourusername/grocery_calculator.git
cd grocery_calculator

Running the App

To run the app on an emulator or a connected device, use the following command:

flutter run

Select the target device when prompted.

Usage

Number Pad

• 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, .99, .: Standard number and decimal input.
• <: Backspace to delete the last entered digit.

Operation Buttons

• +: Adds the current input to the total.
• x: Multiplies the current input with the next entered number.
• =: Computes the final total of the current equation.

History

• Tap on the history icon in the top right corner to view the history of all equations.
• Edit any equation directly in the history, and the total will update accordingly.

Code Overview

Main Files

• main.dart: The entry point of the application.
• calculator_page.dart: Contains the main calculator logic and UI.
• history_page.dart: Handles the history display and editing functionality.

Key Functions

• numPressed(String num): Handles number button presses.
• addPressed(): Handles the addition operation.
• multiplyPressed(): Handles the multiplication operation.
• equalsPressed(): Computes the final result.
• backspacePressed(): Deletes the last entered digit.
• viewHistory(): Navigates to the history page.

Contributing

If you would like to contribute to this project, please fork the repository and submit a pull request with your changes. Contributions are welcome!

License

This project is licensed under the MIT License. See the LICENSE file for details.

Acknowledgments

• Flutter - The framework used to build this app.
• Dart - The programming language used.