stdio.h not found in QT for MVSC2019

[KMead]

I used to work in QT with the native compiler Mingw but I have to use MSVC in order to work with GDAL. I have installed the MVSC2019 kit for my QT version, it is well recognized, the compiler is OK, run qmake works fine, but when I compile the "stdio.h", "math.h" and so on are not recognized.

I have installed in the .pro file an INCLUDEPATH to the location of my SDK :

INCLUDEPATH += C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\ucrt
INCLUDEPATH += C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\shared

But the files are still not recognized, whereas stdio.h is well in the C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\ucrt folder.

What I am doing wrong, and how can I correct this?

Many thanks by advance.

[JonB]

@KMead
I don't use Windows/MSVC, but don't those paths with spaces need quoting? And while we're at it maybe / for \. I would try

INCLUDEPATH += "C:/Program Files (x86)/Windows Kits/10/Include/10.0.19041.0/ucrt"

[KMead]

Many thanks, JOnB, it was actually "C://Program Files (x86)//Windows Kits//10//Include//10.0.19041.0//ucrt"

But your suggestion put me on the right track!

Thanks again for your quick answer.