Hey there, let's work through this step by step since you're stuck finding the VS2017 Developer Command Prompt and can't compile your C code. Here's what you can try:

• Confirm if VS2017 is properly installed

  • Open Control Panel → Programs and Features, and look for entries like "Microsoft Visual Studio 2017 Community/Professional/Enterprise". If you don't see any, your installation didn't complete successfully—you'll need to run the installer again properly.
  • If you do see the entry, the issue is likely that you skipped installing critical components for C/C++ development or command-line tools.

• Repair or modify your VS2017 installation

  • Locate the Visual Studio Installer (if you can't find it on your desktop or start menu, you can re-download the VS2017 bootstrapper to launch it).
  • Open the installer, select your VS2017 instance, and click Modify.
  • In the workloads section, make sure the Desktop development with C++ option is checked. This workload includes the compiler, build tools, and the Developer Command Prompt you need for C programming.
  • Click Modify and wait for the installation to finish. This should add the missing components and shortcuts.

• Locate the Developer Command Prompt manually

  • After modifying the installation, check your Start Menu for a "Visual Studio 2017" folder—inside it, you should see the Developer Command Prompt for VS 2017 shortcut.
  • If the start menu shortcut still doesn't show up, navigate directly to the installation path:
    • The default path is usually C:\Program Files (x86)\Microsoft Visual Studio\2017\<YourEdition>\Common7\Tools (replace <YourEdition> with Community, Professional, etc.)
    • Look for the VsDevCmd.bat file—double-clicking it will launch the Developer Command Prompt with the correct environment variables set for compiling code.
  • You can also open it directly from the VS2017 IDE: Launch VS2017, go to Tools → Command Line → Developer Command Prompt.

• Check your custom installation path

  • If you installed VS2017 to a non-default location, open the Visual Studio Installer, click More next to your VS instance, then select View Install Location to get the exact path. Then head to the Common7\Tools subfolder to find VsDevCmd.bat.

内容的提问来源于stack exchange，提问作者Matt