It seems like you are encountering an error in Microsoft Visual Studio while trying to compile a simple C++ program. The error message "error PRJ0002 : Error result 31 returned from 'mt.exe'" indicates that there might be an issue with the program manifest generation during the build process. Here are some steps you can take to troubleshoot and potentially resolve this error: 1. Check Visual Studio Version Compatibility: - Ensure that the version of Visual Studio you are using is compatible with the C++ project you are trying to build. 2. Clean and Rebuild: - Sometimes, build artifacts can cause issues. Try cleaning your project and then rebuilding it. This can be done by going to the "Build" menu and selecting "Clean...