Create a DLL in C and link it from a C++ project

As per title, I'm trying to build a DLL using C and link it from a C++ project. I read and followed different tutorials on internet but everytime there is something missing and I don't understand what.

Here's what I did, step by step:

I created a new Win32 project, named testlib, then, from the wizard, I chose "DLL" and "Empty project".

Added a header:

//testlib.h

#include <stdio.h>

__declspec(dllexport) void hello();

Added a source; since I want it to be a C source I read I should simplly rename the .cpp file in .c, so

//testlib.c

#include "testlib.h"

void hello() {
    printf("DLL hello() called\n");
}

Build succeded.

Now I would like to use my useful dll in another project.

Then: new project (testlibUse). This time I selected "Empty project".
No need to add an header, just created a cpp source

//main.cpp
#include <testlib.h>

int main() {
    hello();
}

Then:

• I added the path to the folder where is testlib.dll in Properties->VC++ directories->Executable directories

• I added the path to the folder where is testlib.h in Properties->VC++ directories->Include directories

• I added the path to testlib.lib (included extension) in Properties->Linker->Input->Additional dependencies

I tried to build but I got a linker error:

LINK : C:\path\testlibUse\Debug\testlibUse.exe not found or not built by the last incremental link; performing full link
main.obj : error LNK2019: unresolved external symbol "void __cdecl hello(void)" (?hello@@YAXXZ) referenced in function _main
C:\path\testlibUse\Debug\testlibUse.exe : fatal error LNK1120: 1 unresolved externals

If I go back to testlib, rename back testlib.c