C++ GUI Calculator

A lightweight, hardware-accelerated desktop calculator application. This project demonstrates how to build a modern graphical user interface in C++ using an immediate-mode GUI paradigm, avoiding heavy frameworks while maintaining high performance.

Technologies Used

• Language: C++ (Standard 20)
• Window/Hardware API: Raylib
• GUI Library: Dear ImGui
• Bridge: rlImGui
• Build System: CMake

Features

• Standard arithmetic operations (Addition, Subtraction, Multiplication, Division)
• Zero-latency immediate mode rendering
• Automated dependency fetching script for Windows
• Clean, modular CMake build architecture

Prerequisites

To compile this project on Windows, you will need the following tools installed and added to your system PATH:

• Git
• CMake
• MinGW-w64 GCC Compiler (Recommended: Installed via MSYS2)
• Make (mingw32-make)

Installation and Build Guide

Follow these steps to download the dependencies and compile the executable.

1. Clone the Repository

Open your terminal and clone this repository to your local machine:

git clone [https://github.com/YOUR-USERNAME/cpp-gui-calculator.git](https://github.com/YOUR-USERNAME/cpp-gui-calculator.git)
cd cpp-gui-calculator

2. Download Dependencies

Run the included batch script. This will use Git to automatically download Raylib, ImGui, and rlImGui into a local vendor folder.

.\windowssetup.bat

3. Compile the Application

Create a build directory and use CMake to generate the required compiler files, then build the executable.

mkdir build
cd build
cmake -G "MinGW Makefiles" ..
mingw32-make

4. Run the Calculator

Once the compilation reaches 100%, the executable will be generated in the build directory.

.\calculator.exe

Repository Structure

• main.cpp: Contains the core application loop, math logic, and GUI rendering code.
• CMakeLists.txt: The build configuration file that links the source code with the external libraries.
• windowssetup.bat: An automation script to fetch the required external repositories via Git.