[c++] #include errors detected in vscode

I was trying a hello world program, and this line:

#include <stdio.h>

was underlined green. I tried:

  1. Deleting the line
  2. Re-writing the line
  3. Clicking the yellow bulb and choosing to update

fixed the error warning. i don't know if it fixed the actual problem. But then i'm compiling via a linux VM on Windows 10