Fix my vscode Undefined symbols for architecture arm64 error -- 2

Hello.

I am doing a C++ project for school and every time i run my main.cpp on vscode, i keep getting the "Undefined symbols for architecture arm64:" error and i cannot fix it. I need someone to remotely access my MAC via anydesk and fix this issue for me. it should be very simple and take a few minutes for someone who knows C++ and knows what they are doing.

Thanks