'g++' is not recognized in Windows 11

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If 'g++' is not recognized in Windows 11, it means that the g++ compiler is not installed or not properly configured in your system. To resolve this issue, you can follow these steps:

  1. Install MinGW-w64: g++ is typically part of the MinGW-w64 (Minimalist GNU for Windows) distribution, which provides a collection of GNU tools for Windows. Visit the MinGW-w64 website (https://mingw-w64.org/doku.php) and download the installer for your system.

  2. Run the MinGW-w64 installer: Once downloaded, run the installer and follow the installation instructions. During the installation process, you will have the option to select the components to install. Make sure to select the g++ compiler component.

  3. Add MinGW-w64 to the system PATH: After installing MinGW-w64, you need to add its bin directory to the system PATH environment variable. This allows Windows to locate the g++ executable. Here's how you can add it:

    • Open the Start menu and search for "Environment Variables."
    • Select "Edit the system environment variables."
    • In the System Properties window, click the "Environment Variables" button.
    • In the "System Variables" section, scroll down to the "Path" variable and click "Edit."
    • Add the path to the bin directory of your MinGW-w64 installation. The default installation path is C:\mingw-w64\mingw64\bin. Make sure to adjust the path if you installed it in a different location.
    • Click "OK" to save the changes.

  4. Open a new command prompt: Close any existing command prompt windows and open a new one. This ensures that the updated PATH variable takes effect.

  5. Verify g++ installation: Type g++ --version in the command prompt and press Enter. If g++ is properly installed and configured, it should display the version information.

By following these steps, you should be able to resolve the 'g++' is not recognized error in Windows 11 and successfully use the g++ compiler for C++ development.