c++ problem in VS

I've read through the other C++ thread and followed the linked tutorial (https://www.youtube.com/watch?v=77v-Poud_io&ab_channel=LearningLad) . It did work for c, but I'm still getting an error message when trying the same thing with c++. I'm a complete beginner and therefore sadly have absolutely no idea what to do, googling it and following the docs didn't work, cuz.. I didn't understand a step there.. You can call me stupid at this point, I sadly know. "If you get an error trying to build and debug with cl.exe, make sure you have started VS Code from the Developer Command Prompt for Visual Studio using the code . shortcut." Help is highly appreciated! For safety reasons I've included the 'test code' since I don't even know whether it is for C++ or only for C and the error message I got