Intel ARM DS 2020 Problem (unresolved inclusion :<stdio.h)

I have installed arm ds 2020 licensed version and now i have import below example
C:\intelFPGA\20.1\embedded\examples\software\Altera-SoCFPGA-HelloWorld-Baremetal-GNU.tar

I have seen that there is simple “hello Tim” code but it also show “?” in front of #include <stdio.h>,

If i put curser on it it says “unresolved inclusion :<stdio.h>”

*attached is the prints-creen of same

S

o i am not able to build this code …