error：Unable to start debugging. Unexpected LLDB output from command "-exec-run". process exited with status -1 (attach failed ((os/kern) invalid argument))
GitHub的回应是：Debugger not working on apple silicon
解决：
安装CodeLLDB
launch.json里修改type
"type": "lldb"
出处：c++ - VSCode LLDB on MacOS error when starting debugging session - Stack Overflow
vscode 运行C、C++网上很多教程，要配置json，比较繁琐，如果要debug确实得配。但如果只是想抓个代码运行玩玩，可以偷懒，安装Code Runner即可。