I've recently started learning C and have been using an online compiler. I'm considering moving to VS Code and understand that I'll need to install a compiler separately. I looked at MinGW and Clang, but getting MinGW configured seems a little complicated. Would installing LLVM from the official website be enough to get Clang working on Windows? Is Clang generally better than MinGW, or are they suitable for different situations? I'm mainly interested in compiling C projects, including programs split across multiple source files, and I'd prefer a straightforward setup.
4 Answers
On Windows, the simplest native option is usually Microsoft’s MSVC toolchain. If you already have Visual Studio installed, you may already have the compiler available through its C++ workload. You can configure VS Code to use it with the Microsoft C/C++ extension; the same setup works for C as well as C++.
Another option is WSL, where you can install GCC or Clang in a Linux environment and use familiar command-line tools. It generally performs well and is useful if you expect to work with Linux-based development systems later. However, if you want a fully native Windows setup, MSVC is more direct and avoids adding a Linux layer.
I was concerned that WSL might run like a heavy virtual machine and slow down my laptop. Is the performance usually a problem?
For a beginner, you don’t necessarily need a full IDE just to compile C. A compiler plus a build task is enough. If you’re working with multiple C files, compile and link them together in one command—for example, `clang main.c helpers.c -o program.exe`—rather than compiling each file as a separate complete program. Only one source file should define `main`; otherwise the linker will report a duplicate `main` error. Build systems such as CMake can make larger projects easier to manage later.
That explains the error I was seeing with multiple files. I was treating each file as a separate program instead of compiling them together.
You can install LLVM from the official Windows release and use Clang, but you’ll still need to configure VS Code with the compiler path, build tasks, and usually a debugger. Clang and MinGW aren’t exactly competing compilers: MinGW is a Windows port of the GNU toolchain, while Clang is a compiler commonly paired with LLVM. Either can work well for learning C; the easiest choice depends more on which setup guide and build environment you want to follow.
I didn’t realize the compiler from Visual Studio could also be used through VS Code. That makes the setup much clearer—thanks!