https://github.com/felipefma/gtkcalc
Simple calculator in C with GTK, created for fun and learning.
https://github.com/felipefma/gtkcalc
Last synced: about 1 month ago
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Simple calculator in C with GTK, created for fun and learning.
- Host: GitHub
- URL: https://github.com/felipefma/gtkcalc
- Owner: FelipeFMA
- License: mit
- Created: 2024-12-26T23:05:02.000Z (4 months ago)
- Default Branch: main
- Last Pushed: 2025-03-09T21:23:09.000Z (about 2 months ago)
- Last Synced: 2025-03-09T22:25:05.551Z (about 2 months ago)
- Language: C
- Homepage:
- Size: 145 KB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# GTK Calculator
A simple calculator application built with C and GTK3.
## Features
- Basic arithmetic operations: addition, subtraction, multiplication, and division
- Decimal point support
- Clear button (C) to reset the calculator
- Backspace button (⌫) to delete the last digit
- Improved error handling for division by zero and invalid operations
- Better visual feedback with button highlighting
- Responsive UI with improved styling
## Requirements
- GCC compiler
- GTK3 development libraries
- Math library (libm)
## Building the Application
To build the calculator, make sure you have the required dependencies installed:
### Ubuntu/Debian
```bash
sudo apt-get install build-essential libgtk-3-dev
```
### Fedora
```bash
sudo dnf install gcc gtk3-devel
```
### Arch Linux
```bash
sudo pacman -S gcc gtk3
```
Then, build the application:
```bash
make
```
## Running the Calculator
After building, run the calculator with:
```bash
./calculator
```
## Usage
- Click the number buttons (0-9) to input numbers
- Click the decimal point (.) button to add a decimal point
- Click operation buttons (+, -, *, /) to perform arithmetic operations
- Click the equals (=) button to calculate the result
- Click the clear (C) button to reset the calculator
- Click the backspace (⌫) button to delete the last digit
### Keyboard Shortcuts
The calculator also supports keyboard input:
- Number keys (0-9) for entering digits
- Period (.) for decimal point
- Operation keys (+, -, *, /) for arithmetic operations
- Enter or = for calculating the result
- Escape or 'c' key for clearing the calculator
- Backspace for deleting the last digit
## Code Structure
The calculator has been refactored to use a more modular approach:
- Calculator state is encapsulated in a struct
- Improved error handling for mathematical operations
- Better visual feedback with CSS styling
- Cleaner code organization with proper documentation
## Cleaning Up
To clean the build files:
```bash
make clean
```