Identifier is undefined

[dafzor]

All Arduino functions in Visual Studio code show underlined in red with the following error:

severity: 'Error'
message: 'identifier "pinMode" is undefined'
at: '10,5'
source: ''

Adding #include <Arduino.h> fixes those error but shows a new ones like:

severity: 'Info'
message: 'cannot open source file "stdlib.h" (dependency of "Arduino.h")'
at: '1,1'
source: ''

This error shows on two computers I tested, around one to two weeks ago it did not occur. Verification and Upload still work without regardless of the error above.

[redwarff]

I am having the exact same problem

[kulbhushanchand]

Same problem here.
Is there a way not to write the basic include files in the beginning, just like we do in arduino official IDE?

[JebinMatthew25]

Yep exactly, but the code can be uploaded without problems, still it's annoying

[yaohaizh]

Duplicate with #438

Please see the related issue.